Arachnology
Entomology
Invertebrate Zoology
Vertebrate Zoology
Word Roots
Strange Tales
Rokes and Jiddles
A Dictionary for Invertebrate Zoology
Head Words - S
‘S’-Shaped Growth Curve (Sigmoidal Growth Curve), Sabellariidae, Sabellida, Sabellidae, Sabulicolous, Sabulous, Sabulose, Sac, Saccate, Sacciferous, Sacciform (Saccular), Sacculate, Sacculation, Saccule, Sacculus, Saccus, Sacoglossa, Sacred Scarab, Saddle, Saefftigen’s Pouch, Sagitta, Sagittae, Sagittal, Sagittal Triact, Sagittal Triradiates, Sagittate (Sagittiform), Sagittocyst, Sagittoidea, Sail, Sailor Beetle, Saldidae, Salenioida, Salient, Salinity, Saliva, Salivaria, Salivarium, Salivary (Outlet) Canal, Salivary Ducts, Salivary Gland Chromosomes, Salivary Glands (Sialaden), Salivary Pump, Salivary Receptacle, Salivary Syringe, Salpingidae, Salpingopalatine, Salpinx, Salsuginous, Salt Marsh, Saltant, Saltation (Macrogenesis), Saltatoria, Saltatorial, Saltatory, Salticidae, Saltigrade, Samesense Mutation, Sandalidae, Sand Cockroaches, Sand Crabs, Sand Crickets, Sand Dollars, Sand Flea, Sand Flies, Sand Hopper, Sand Wasps, Sanguicolidae, Sanguicolous, Sanguiferous, Sanguimotor, Sanguine, Sanguivorous (Sanguinivorous), Sanidaster, Sap Beetle, Sapphirine, Saprobe, Saprobic, Saprobiont, Saprobity System, Saprogenic, Sapromyiophilous, Sapromyzidae, Sapropelic, Saprophage (Saprophagous, SaproPhilic), Saprophytophagous, Saproplankton, Saprotroph (Saprovore), Saprovore, Saproxylobios, Saprozoic Nutrition, Saprozoite, Sapygidae, Sarcinaeform, Sarciniform, Sarcobelum, Sarcogenic, Sarcoid, Sarcolemma (Myolemma), Sarcolysis, Sarcolyte, Sarcoma, Sarcomere (Komma), Sarconemes, Sarcophagidae, Sarcophagous, Sarcoplasm, Sarcoplasmic Reticulum, Sarcoptidae, Sarcoptiformes, Sarcosoma, Sarcostyle (Muscle Column), Sarcostyle, Sarcotheca, Sarothrum, Sarsostraca, Satiation, Saturation Dispersal, Saturation, Saturniidae, Saturnine, Satyrinae (Agapetidae), Savannah (Savanna), Saw, Saw Bristles, Sawflies, Saxatile, Saxicavous, Saxicolous, Scabellum, Scaberulous/Scabrous, Scabrate, Scalacea, Scalariform (Scaliform), Scale Insect, Scale, Scaleworms, Scalids, Scaliform, Scalloped, Scallops, Scalp, Scalpella, Scalpellum, Scalpriform, Scaly, Scampo/Scampi, Scansorial, Scape, Scaphe, Scaphidiidae, Scaphiform, Scaphoid, Scaphium, Scaphocerite, Scaphognathite (Gill Bailer), Scaphoid, Scaphopoda, Scapula, Scapulus, Scapuli, Scapus, Scarab, Scarabaeidae, Scarabaeiform (Scarabeiform), Scarabaeiform Larva, Scarabaeoid, Scarabaeoidea, Scarified, Scarious, Scarpa’s Fascia, Scarpa’s Foramen, Scarpa’s Triangle, Scat, Scathophagidae, Scatobios (Skatobios), Scatology, Scatophagy, Scavengers, Scelionidae, Scenopinidae (Omphralidae), Scenopoetic Axes, Scent Brush, Scent Glands (Odoriferous Glands), Scent Pore, Scent Scales, Sceptrules, Schemochromes, Schistosomatidae, Schistosome, Schistosomiasis, Schistosomula, Schizeckenosy, Schizochroal Eyes, Schizocoel(e), Schizocoela (Schizocoelomates), Schizodactylidae, Schizodonta, Schizoendemic, Schizogamy, Schizogenesis (Scissiparity), Schizogenetic, Schizokinete, Schizolectotype, Schizolophe, Schizolysigenous, Schizolysis, Schizomida (Schizopeltida), Schizopeltid, Schizopeltida, Schizophora, Schizopod Larva (Schizopod Stage), Schizopoda, Schizopteridae, Schizorhyses, Schizothecal, Schizotype, Schmidt’s Layer, Schwann Cell (Neurilemmal Cell), Schwann Sheath, Scientific Name, Scinidae, Scinoidea, Sciomyzidae, Scissile, Scissiparity, Scissorial Area, Scissure, Scleractinia, Scleraxonia, Sclere/Sclereid, Sclerification, Sclerite, Scleritization, Sclerobase, Scleroblast, Scleroblastema, Scleroblastic, Scleroblasts, Sclerocyte (Spongocyte), Scleroderm, Sclerodermatous, Sclerodermite, Sclerogibbidae, Scleroid (Sclerous), Sclerophagous, Scleroproteins (Sclerins), Scleroseptum, Sclerosis, Sclerospongiae, Sclerotin, Sclerotization, Sclerous, Scobinate, Scobiscular (Scobiform, Scobisculate), Scoleces, Scolecid (Scolecoid), Scolecidam, Scoleciform, Scolecispore, Scolex, Scoli, Scoliidae, Scolioidea, Scolite, Scolopale, Scoloparium, Scolopendromorpha, Scolophore (Scolopidium), Scolopidium (Scolopophore, Sensillum Scolopophorum), Scolopoid Sheath, Scolopophore, Scolophore, Scolopophorus Organ, Scolops, Scolus, Scolytidae, Scolytoid Larva, Scopa, Scopate (Scopiferous), Scopiferous, Scopiform (Scopulate), Scopula, Scopules, Scopuliferous, Scopuliform, Scopulipedes, Scorpamins, Scorpioid, Scorpion Flies, Scorpiones (Scorpionoidea), Scorpions, Scorpionoidea, Scotochromogens, Scotopic, Scraper, Scraptiidae, Screech Beetle, Screw Dislocation, Scrobal, Scrobe, Scrobicula, Scrobicular Tubercles, Scrobicules, Scrobiculate, Scrobiculus, Scrobis, Scrotal Membrane, Scrotiform, Scrotum (Scrotal Sac), Scrupariina, Scruparioidea, Sculpture, Scutal, Scutal Angle, Scutal Margin, Scutate, Scute, Scutel, Scutella, Scutellar Bridge, Scutellar Bristles, Scutellate (Scutelliform), Scutellation, Scutelleridae, Scutelligerous, Scutellina, Scutellum, Scutella, Scuticociliatida, Scutiform, Scutigerellidae, Scutigeromorpha, Scutigerous (Scutiferous), Scutiped, Scutoscutellar Suture, Scuttle Flies, Scutulis, Scutum, Scydmaenidae, Scyllaridae, Scyphiform (Scyphoid), Scyphistoma (Scyphula), Scyphomedusae, Scyphozoa, Scyphula, Scyphulus, Scytodidae, Sea Anemones, Sea Butterflies, Sea Combs, Sea Cucumbers, Sea Fan, Sea Gooseberries, Sea Hares, Sea Lilies, Sealing Bar, Seam Cells, Sea Mice, Sea Moth, Sea Pens, Searching, Sea Slugs, Seasonal Isolation, Sea Spiders, Sea Stars, Sea Urchins, Sea Walnuts, Sea Wasps, Seaweed Flies, Sebiferous, Sebific Duct/Gland, Sebum, Secernentea (Phasmidia), Second Antennae, Second Axillary, Second Longitudinal Vein, Second Maxillae, Second Trochanter, Second Valvifers, Second Valvulae, Second Vein, Secondary, Secondary Characters, Secondary Constriction, Secondary Consumer, Secondary Fiber, Secondary Genitalia, Secondary Homonym, Secondary Host, Secondary Intergradation, Secondary Iris Cells, Secondary Ocelli, Lateral Ocelli, Secondary Oocyte, Secondary Pigment Cells. See Accessory Pigment Cells., Secondary Pleometrosis, Secondary Reproductive, Secondary Riblet, Secondary Segmentation, Secondary Setae, Secondary Sex Ratio, Secondary Sexual Characteristics, Secondary Shell Layer, Secondary Sockets, Secondary Somatic Hermaphrodite, Secondary Speciation, Secondary Spicules, Secondary Teeth, Secondform Reproductive, Secreta, Secretion, Secretory Granules, Section, Sectorial, Sectorial Cross Vein, Secund, Secundibracts, Securiform, Sedentaria, Sedentary, Seductor Gubernaculi, Seed Galls, Seed Shrimps, Seed Weevil, Seed, Segestriidae, Segment, Segmental Arteries, Segmental Blood Vessel, Segmental Interchange, Segmental Papillae, Segmental Reflex, Segmental Spines, Segmentation, Segmentation Cavity, Segmentation Nucleus, Segregate, Segregation, Segregation Distortion, Segregational Load, Seismaesthesia, Seismotaxis, Seisonidea (Seisonacea), Seizing Jaws, Sejugal, Selection Coefficient, Selection Differential, Selection Pressure, Selection, Selective Advantage, Selective Breeding, Selective Neutrality, Selective Value, Selectively-Permeable Barrier, Selenaster, Seleniform, Seleniform Cell, Selenizone, Selenoid, Self-Fertile/Selfing, Self-Fertilization, Selfing, Selfish Dna, Selfish Genes, Selfishness, Self-Regulation Hypothesis, Self-Sterile/Self-Sterility/Self Incompatibility, Sella Turcica (Turkish Saddle), Sellaeform (Selliform), Sellate, Seller Groove, Selva, Selvage, Semaeostomatida (Semaeostomeae, Semaeostomae), Sematic, Sematophore, Sematuridae, Semelparity, Semen, Semicircular, Semiclasp, Semicomplete, Semiconservative Replication, Semicylindrical, Semidominance, Semidominant, Semifenestra, Semigamy, Semigeographic Speciation, Semilethal, Semilunar, Semimetamorphosis, Seminal Bursa (Bursa Seminalis), Seminal Canal, Seminal Ducts, Seminal Funnel, Seminal Groove/Furrow, Seminal Receptacle, Seminal Vesicle, Seminal, Semination, Seminiferous, Seminymph, Semiochemistry, Semiorbicular, Semiotics, Semiovate (Semiovoid), Semioviparous, Semiparasite, Semipenniform, Semipermeable, Semipupa, Semirecondite, Semisagittate, Semisocial, Semispecies, Semper's Cells, Semper's Larva, Semper's Rib, Senescence, Senility, Senior Homonym, Senior Synonym, Sense Club, Sense Cone/Peg, Sense Organ (Receptor), Senseiferous (Sensigerous), Sensile, Sensilla Ampullacea, Sensilla Candelari, Sensilla Circumfila, Sensilla, Sensilla Pouch, Sensillium, Sensillum Ampullaceum (Ampull-Aceous Sensillum), Sensillum Auriforme, Sensillum Basiconicum (Basiconic Sensillum), Sensillum Campaniformium, Sensillum Chaeticum, Sensillum Coeloconicum (Coelo-Conic Sensillum), Sensillum Coelosphaericum, Sensillum Coleum, Sensillum Insiticum, Sensillum, Sensillium, Sensillum Opticum, Sensillum Placodeum, Sensillum Rhinarium, Sensillum Scolopophorum, Sensillum Squamiformium (Sensory Scales), Sensillum Styloconicum, Sensillum Trichodeum (Trichoid Sensillum), Sensitive, Sensitivity Analysis, Sensitivity, Sensitization, Sensomobile, Sensorium, Sensory, Sensory Adaptation, Sensory Cell, Sensory Cell, Type I, Sensory Cell, Type Ii, Sensory Cells, Sensory Neurone, Sensu Amplificato (S. Ampl.), Sensu Lato (S. L.), Sensu Proprio (S. Pr.), Sensu Stricto (S. Str.), Senti, Sentus, Sentient, Sepia Bone, Sepia, Sepicolous, Sepiment, Sepioidea, Sepion (Sepia Bone, Sepiost, Sepio-Staire, Sepium), Sepium, Sepsidae, Septa, Septal, Septal Filaments, Septal Fossula, Septal Neck, Septal Plate, Septalial Plates, Septalium, Septasternum, Septate Junction, Septate, Septibranch, Septibranchia, Septiform, Septula, Septulum, Septum, Septa, Septum Narium, Sequential Hermaphrodite, Sera, Sere, Serial Crochets, Serial Symbiosis Theory, Seriata, Seriate, Sericate (Sericeous), Sericin, Sericose, Sericostomatidae, Serictery, Sericterium, Serific, Serific Glands, Serodeme, Serolidae, Serosa, Serosal Cutical, Serotinal, Serous Alveoli, Serous Fluids, Serous Glands, Serous, Serpent Stars, Serpentinous, Serphoidea, Serpulidae, Serpulimorpha, Serpulite, Serra, Serrate (Serratiform), Serratulate, Serrature, Serratus Magnus, Serriferous, Serriform, Serriped, Serritermitidae, Serropalpidae, Serrula, Serrulate (Serratulate), Serrulation, Sertularians, Serum, Sesiidae (Aegeriidae), Sesioidea, Sesquiocellus, Sessile, Sessilina, Sessoblast, Seston, Seta, Setaceous, Setal Sac, Setate, Setation, Setiferous (Setigerous, Chaetifer-Ous), Setiform, Setigenous, Setiger, Setigeris, Setigerous (Setiferous), Setigerous Lobe, Setigerous Tubercles, Setiparous, Setireme, Setobranchia, Setose, Setula (Setule), Setuliform, Setulose, Seventy Five Percent Rule, Sewall Wright Effect, Sex Cells, Sexual Cells, Sex Chromatin, Sex Chromosome (Heterotropic Chromosome), Sex Determination, Sex Digamety, Sex Gland, Sex Hormones, Sex Monogamety, Sex Mosaic, Sex Polygamety, Sex Ratio, Sex Reversal (Sex Transformation), Sex, Sex-Conditioned (Influenced) Character, Sex-Controlled Genes, Sex-Factor, Sexfid, Sex-Influenced Character, Sex-Limited Character, Sex-Limited Inheritance, Sexlinked Character, Sex-Linked Genes, Sex-Linked Inheritance, Sexprostatic, Sexradiate, Sexton Beetle, Sexual Bimaturism, Sexual Cell, Sexual Coloration, Sexual Congress, Sexual Dimorphism, Sexual Generation, Sexual Hybrid, Sexual Pore, Sexual Reproduction, Sexual Selection, Sexual Zooid, Sexuales, Sexuparous, Shadow Reaction, Shaft, Shagreened, Shannon-Wiener Index of Diversity (Information Index), Sheath Laminae, Sheath of Penis, Sheath, Sheet-Web Spiders, Shell, Shellac, Shell Beak, Shelled Pteropods, Shell Fold, Shellford’s Law of Tolerance, Shell Gland, Shell Membrane, Shell Plates, Shield, Shield-Backed Grasshoppers, Shieldbug, Shield-Shaped Tentacles, Shift, Shorebugs, Short-Horned Grasshopper, Short-Winged Crickets, Shoulder, Shovel, Shrimps, Sialaden, Sialic, Sialidae, Sialoid, Sialoidea, Sib Mating, Sibling Species, Siblings (Sibs), Siboglinidae, Siccocolous, Sickle Dance, Sicula, Side, Siderophil, Siebold's Organ, Sieve Area, Sieve Plate, Sieve Tracheae, Sigillum, Sieve Plate (Sieve Disc), Sieve Pore, Sigalionidae, Sigma, Sigmaspire, Sigmatosclerophora, Sigmoid, Sigmoidal Growth Curve, Sigmoid Curve, Sigmoid Flexure, Sign Stimulus, Signa, Signum, Silent Allele, Silent Dna, Silesian, Silicalemma, Siliceous Ooze, Siliceous, Silicious, Silicified, Silicoblasts, Silicospongeae (Silicispongeae), Silification, Siliquariidae, Siliquiform, Silk, Silk Glands, Silk Moth, Silk Press (Silk Regulator), Silphidae, Silurian, Silvanidae, Silver Biddy, Silverfish, Silvicolous, Simblospore, Simple Eyes, Simple Forceps, Simple Seta, Simple Skeletal Wall, Simple Velum, Simple, Simple-Wall Colony, Single-Wall Colony, Simplex, Simulation, Simuliidae, Simultaneous (Synchronous) Hermaphrodite, Simultaneous Polyandry, Sinciput, Single Band of Crochets, Sinistral Gastropods, Sinistral, Sinistron, Sinistrose, Sinuate, Sinuatolobate, Sinuosity, Sinupalliata, Sinupalliate, Sinus (Lacuna), Sinus Gland, Sinusoid, Siphlonuridae, Siphon, Siphonal Area, Siphonal Canal, Siphonal Fasciole, Siphonal Fold, Siphonal Notch, Siphonal Retractor Muscles, Siphonal Tube, Siphonaptera (Aphaniptera), Siphonariidae, Siphonate, Siphonet (Siphuncle), Siphonoglyph, Siphonophora, Siphonophorida, Siphonophoridae, Siphonoplax, Siphonopoda, Siphonorhinal, Siphonostomatous, Siphonozooid (Siphonozoid), Siphons, Siphuncle, Siphunculata, Siphunculate, Sipuncula (Sipunculida), Sipunculidae, Sipunculidea, Sipunculiformes, Siricidae, Siricoidea, Sistentes, Sister Cells, Sister Nuclei, Sister Groups, Sister Species, Sisyridae, Sitophore Sclerite (Oesophageal Sclerite), Sitopore, Sitotropism, Situs, Skatobios, Skein, Skeletal Duplicature, Skeletogenous, Skeleton, Skin Beetle, Skin Bodies (Hautkorper), Skin Gill, Skin Rings, Skin, Skiophilous, Skipper, Skotoplankton, Skototaxis, Skull, Slaters, Slavery, Sleeping Sickness, Slime Glands, Slime Tube, Slit Band, Slit Ray, Slit Sense Organs, Slit Sensilla, Slopefaced, Slug, Sminthuridae, Smooth Muscle, Snail, Snakeflies, Snapping Beetles, Snapping Shrimps, Snipe Flies, Snout, Snout Beetles, Snout Butterflies, Snow Fleas/ Snow Flies, Snow Worm, Social Cohesion Hypothesis, Social Drift, Social Facilitation, Social Group, Social Hierarchy, Social Homeostasis, Social Hormones, Social Insects, Social Interaction, Social Parasite, Social Parasitic Castration, Social Parasitism, Social Releaser, Social Wasps, Social, Society, Socii, Socius, Sociobiology, Sociohormone, Sociotomy, Socket, Soft Corals, Softpart Polymorph, Solation, Soldier Beetle, Soldier Flies, Soldier, Solecurtidae, Solemyoida, Solenia, Solenidae, Solenidion, Soleniform, Solenocytes, Solenogasters, Solenomerite, Solenophage, Solid Ramose Colony, Solidungulate, Solifugae (Solpugida), Solitaria Phase (Solitaria), Solitary Bees, Solitary Wasps, Solitary, Solpugida, Soma, Somactids, Somaesthesis, Somasteroidea, Somatic Cell, Somatic Chaetae, Somatic Crossing Over, Somatic Doubling, Somatic Hybrid, Somatic Layer, Somatic Musculature, Somatic Mutation, Somatic Nerves, Somatic Parthenogenesis, Somatic Setae, Somatic Tissues, Somatic, Somatoblast, Somatocoels, Somatocyst, Somatoderm, Somatoesophageal Muscles, Somatogamy, Somatogenic (Somatogenetic), Somatointestinal Muscles, Somatology, Somatome, Somatoplasm, Somatopleure, Somatotheca, Somatotrophic, Somite (Somatome), Sonifaction, Soniferous, Sonoran Region, Sorotrochous, South African Region, Sp. Ind./Indet, Sp. N./Nov, Sp./Spp, Spadix, Spado, Spanandry, Spanish Fly, Spanogyny (Spanogamy), Sparassidae, Sparganum, Spargonophilidae, Spasm, Spat, Spatangoida, Spatfall, Spatha, Spathebothriidae, Spathulate, Spatia, Spatial Summation, Spatula, Spatulate, Spawn, Spear, Spear-Headed Grasshoppers, Specialist, Specialization, Specialized, Speciation, Specient, Species, Species Aggregate (Species Group), Species Group, Species Inquirenda, Species Longevity, Species Name, Species Odor, Species Recognition, Species-Specific Behavior (Inborn Behavior), Species Swarm, Specific, Specific Character, Specific Density, Specific Epithet (Specific Name), Specific Modifier, Specific Name, Specificity, Specimen, Specophile, Specular Membrane, Speculum, Spelaeogriphacea, Spemann’s Organizer, Spengelidae, Sperm, Sperm Bladders/Bulbs, Sperm Cell, Sperm Competition, Sperm Conceptacles, Sperm Cyst, Sperm Duct, Sperm Funnels, Sperm Induction, Sperm Morula (Spermatidium), Sperm Nucleus, Sperm Pump, Sperm Sac, Sperm Sharing, Sperm Web, Spermaduct, Spermagonium, Spermalege, Spermarium (Spermary), Spermatangium, Spermateleosis, Spermatheca (Spermotheca, Recept-Aculum Seminis, Seminal Recep-Tacle), Spermathecal Chaeta, Spermathecal Gland, Spermatic Atrium, Spermatid, Spermatidium, Spermatocyst, Spermatocyte, Spermatocytogenesis, Spermatodactyl, Spermatogenesis (Spermogenesis), Spermatogonial Cyst, Spermatogonium (Spermagonium), Spermatoid, Spermatolophis, Spermatomerites, Spermatophore, Spermatophore Cup, Spermatophore Sac, Spermatophoric Sac, Spermatophory, Spermatophragma, Spermatoplasm, Spermatoplast, Spermatopositor, Spermatosome, Spermatotheca, Spermatoxin, Spermatozeugma, Spermatozoa, Spermiducal Glands, Spermiducts, Spermiocalyptrotheca, Spermiocyte, Spermiogenesis (Spermateleosis), Spermoduct, Spermora, Spermozeugma, Sphaeridia, Sphaeriidae, Sphaeritidae, Sphaeroceridae (Borboridae), Sphaeroclone, Sphaeroid, Sphaerolichida, Sphaeromidae, Sphaeroplast (Spheroplast), Sphaerotheriida, Sphagnophilous/Sphagnicolous, S-Phase, Sphecidae, Spheciospongia, Sphecoidea, Sphecology, Sphecophile, Sphenic, Sphenoid, Spheraster, Spheres, Spheridia, Spheroidal, Spheroidocyte, Spheroidosis, Spheromere, Spheroplast, Spherosome, Spherula, Spherulate, Sphigmoid, Sphincter, Sphindidae, Sphingidae, Sphingiform Larva, Sphingoidea, Sphinx Moth, Sphragidal, Sphragis, Spicate, Spiciform, Spicula, Spicular Muscles, Spicular Pouch, Spicular Sheath, Spiculate, Spicule, Spicule Hair, Spiculiferous, Spiculiform, Spiculose, Spiculum, Spider Beetles, Spider Cells, Spider Crabs, Spider-Hunting Wasps, Spiders, Spigots, Spikedtail Stage, Spina, Spinasternum, Spinate, Spination, Spindle, Spindle Attachment, Spindle Cell, Spine, Spine Base, Spine Hairs, Spinescent, Spinicaudata, Spiniferous (Spinigerous), Spiniform, Spiniger, Spinigerous, Spinisternite, Spinner, Spinneret, Spinnerule, Spinning Bristle, Spinning Glands, Spinose, Spinous, Spintherida, Spinulate, Spinule, Spinulifer, Spinuliferous, Spinulose, Spinulous, Spinulosida, Spiny Lobsters, Spiomorpha (Spionida), Spionidae, Spiracle (Spiraculum), Spiracular Area, Spiracular Atrium, Spiracular Cleft, Spiracular Depressions, Spiracular Disk, Spiracular Gills, Spiracular Grooves, Spiracular Line, Spiracular Muscles, Spiracular Plate, Spiracular Processes, Spiracular Sclerite, Spiracular Setae, Spiracular Sieve Plate, Spiracular Spines, Spiraculate, Spiraculiferous/Spiraculate, Spiraculiform, Spiraculum, Spiral Amphid, Spiral Cleavage, Spiral Conic, Spiral Filament, Spiralia, Spiralium, Spiral Intestine, Spiral Thread/Filament, Spiramen, Spiraster, Spire, Spire Angle, Spireme, Spiriferous, Spirignath, Spiritrompe, Spirillum, Spirivalve, Spirobolida, Spirobrachiidae, Spirocyst, Spirogyrate, Spiroid, Spirolophe, Spironeme, Spirorchidae, Spirophorida, Spirostreptida, Spirostreptidae, Spirulate, Spirurida (Spirurdida, Spiruroidea, Spirurata), Spitting Spiders, Spittle-Bugs, Splanchnic, Splanchnic Layer (Splanchno-Pleure), Splanchnic Nerves, Splanchnology, Splanchnopleure, Splendent, Split Sense Organs, Splitter, Splitting, Spondyliaspididae, Spondylium, Sponge, Spongicolous, Spongiform, Spongiidae, Spongillidae, Spongillina, Spongin, Sponginoblast (Spongoblast), Spongioblasts, Spongiocoel (Spongocoel), Spongiocyte, Spongioplasm (Cytoreticulum, Mitome, Polioplasm), Spongiose, Spongocoel, Spongocyte, Spongophore, Spontaneous Generation, Spontaneous Mutation, Spools, Spoon Worms, Spoon, Sporadin, Sporoid, Sporosac, Sporozoid, Sporulation, Spout, Spraing, Springtails, Spumellaria, Spur, Spur Fasciole, Spur Furrow, Spurious, Spurious Claw, Spurious Dissepiments, Spurious Legs, Spurious Vein, Spur-Throated Grasshoppers, Squama, Squamae, Squamate, Squamation, Squamelliform, Squamiferidae, Squamiferous, Squamiform, Squamous, Squamula, Squamulate/Squamulose, Squarrose, Squashbug, Squids, S-Strategists, Stabel Equilibrium, Stabilamentum, Stabilimentum, Stabilate, Stabilizing Selection, Stadium, Stadium, Stag Beetles, Stag-Horned, Stagnicolous, Stagnoplankton, Stalk Body, Stalk-Eyed Flies, Staphyla, Staphylinidae, Staphylinoidea (Brachelytra), Starfish, Stase, Stasigenesis, Stasimorphic Speciation, Stasimorphy, Stasipatric Speciation, Stasis, Stasoid, Statary Phase, Stathmokinesis, Static Allometry, Static, Stationary Growth Phase, Statis Organ, Statis Sense, Stato-Acoustic, Statoblast, Statocone, Statocyst (Lithocyst), Statocyte, Statokinetic, Statolith, Statorhabd, Statospore, Stauractine, Stauromedusae (Lucernariida, Stauromedusida), Stegasimous, Stellate, Stellate Chromatophore, Stellate Ganglion, Stelleroidea, Stelliform, Stelmatopoda, Stelocyttarous, Stem Flies, Stem Nematogen, Stem, Stemma, Stemmata, Stemmocryptidae, Stenobaric, Stenobathic, Stenobenthic, Stenocephalidae, Stenocephalous, Stenochoric, Stenocoenose, Stenoecious, Stenogamy, Stenogastric, Stenoglossa, Stenoglossate, Stenohaline, Stenohalic, Stenohygric, Stenohygrobia, Stenolaemata (Stenostomata), Stenolume (Stenophotic), Stenomorphic, Stenonotal (Stenonatal), Stenopaic, Stenopelmatidae, Stenophagous (Stenophagic), Stenopodidea, Stenopodium, Stenopterous, Stenosaline, Stenosis, Stenostomata, Stenostomatous, Stenotele, Stenothermous, Stenothermal, Stenothoidae, Stenotopic, Stenotritidae, Stenotropic, Stenovalent, Stenoxenous, Stensen’s Duct, Stephanidae, Stephanocircidae, Stephanokont, Stercoral, Stercoral Pocket, Stercoraria, Stereoblastula, Stereogastrula, Stereognostic Sense, Stereokinesis, Stereoplasm, Stereotaxis, Stereotropism, Sterile, Sterinx, Sternacosta, Sternacostal Suture, Sternal, Sternal Apophyseal Pits, Sternal Apophysis, Sternal Canal, Sternal Coxal Process, Sternal Laterale, Sternal Plastron, Sternal Plates, Sternal Process, Sternal Spatula, Sternal Taenidium, Sternal Verrucae, Sternannum, Sternapophysis, Sternaspiomorpha (Sternaspida), Sternaulus, Sternellum (Poststernite), Sternite, Sternobranchial, Sternopleural Bristles, Sternopleurite, Sternorrhyncha (Phytophthires), Sternum Canal, Sternum, Sterrasters, Sterroblastula, Sterrula, Stethidium, Stethosoma, Stewart’s Organs, Stichic, Stichochrome, Stichocytes, Stichosome, Stick Insects, Stictococcidae, Stigma (Stigmata), Stigmal Vein, Stigmatal Field, Stigmatal Line, Stigmatal Spine, Stigmatic Cord, Stigmatic Scar, Stigmatiferous, Stigmatiform, Stigmellidae, Stigmelloidea, Stigmergy, Stiletto Flies, Stilt Insects, Stilt, Stilting, Stimulation, Stimulus, Sting, Sting Autotomy (Autothysis), Sting Sheath Gland/Sheath Gland, Stipe, Stinging Button, Stingless Bee, Stink Gland, Stipes, Stipiform, Stipital, Stipitate, Stipple, Stirps, Stobbe's Gland, Stock, Stolon, Stolonate, Stolonifera, Stoloniferous, Stolonoidea, Stolotheca, Stoma (Stomate), Stomach, Stomate, Stomatodaeum, Stomatogastric, Stomatogenesis, Stomatopoda, Stomatostyle, Stomatostylet, Stomatotheca, Stomidium, Stomions, Stomoblastula, Stomochord, Stomochordata, Stomocnide, Stomodaeal Apparatus, Stomodaeal Canal, Stomodaeal Feeding, Stomodaeum (Stomodeum), Stomodeal Bridge, Stomodeal Canal, Stomodeal Feeding, Stomodeal Nervous System, Stomodeal Valve, Stomogastric Nerve, Stomogastric Nervous System, Stone Canal (Hydrophoric Canal, Madreporic Canal), Stone Crabs, Stone Crickets, Stoneflies, Stony Corals, Storage Mites, Storage Pots, Stouts, Strahl, Strahlen, Straight Hinge Veliger, Stramineous, Stratified Epithelium, Stratiform/Stratose, Stratigraphic Range, Stratiomyidae, Stratum, Streaming, Streblidae, Strepsilaematous, Strepsiptera, Streptaster, Streptastrosclerophora, Streptoneura, Streptoneurous, Streptophiurae, Stress Hypothesis, Stress, Stretch Receptor, Stria, Striate(d), Striated Border, Striated Muscle, Striation, Stricture, Stridulating Organs, Stridulation, Striga, Strigate, Strigeidae, Strigeoid Trematodes, Strigeata, Strigeatida, Strigil(Is), Strigilation, Strigilator, Strigillose, Strigose, Strigose Ventral Areas, Strigula, Strike, String Reef, Striola, Striped Muscle, Strobila, Strobilation (Strobilization), Strobilocercoid, Strobilocercus, Stroma, Stromatoporoidea, Strombacea, Strombiform, Stromboid Notch, Strombuliferous, Strombuliform, Strongylaster, Strongyle (Strongylon), Strongylida (Strongyloidea, Strongylata), Strongylidae, Strongyloxea, Strophandria, Strophe, Strophomenida, Structural Colors, Struggle For Existence, Struma (Strumose), Stupeous, Stupulose, Stygobionts, Stygocaridacea, Stygophilic, Stygoxenous, Stylamblys, Stylasterina, Stylate, Style Sac, Style, Stylet Extension, Stylet Knobs, Stylet Sac, Stylet Sheath, Stylet, Styletocytes, Stylifer, Styliferidae, Styliferous, Styliform, Styliger Plate, Stylocerite (Antennular Scale), Styloconic, Styloconic Sensilla, Stylode, Styloid, Stylommatophora, Stylophora, Stylopidae, Stylopization, Stylose, Stylostome, Stylus, Sub-, Subalar Sclerite, Subalpine, Subalternate, Subanal Lobe/Appendage, Subanal Scale, Subantennal Groove, Subantennal Ridge, Subapical Lobe, Subapotorma, Subapterous, Subarborescent, Sub-Basal, Sub-Biramous, Sub-Branchial, Sub-Branchial Region, Subcapitular, Subcapitular Apodeme, Subcapitular Gutter, Subcarina, Subcarinate, Subcartilaginous, Subcastes, Subcaudal, Subcephalic, Subcerebral Glands, Subchela, Subchelate, Subclass, Subclimax, Subclypeal Pump, Subclypeal Tube, Subcolony, Subcosta, Subcoxa (Precoxa, Praecoxa, Pretro-Chantin), Subcoxal Pleurites, Subcubical, Subcutaneous, Subcuticula, Subcuticular, Subcutis, Subdentate, Subdermal, Subdiscal/Subdiscoidal Vein, Subdorsal, Subdorsal Keel/Plate, Subdorsal Line, Subdorsal Ridge, Subepithelial, Subesophageal Body, Subesophageal Ganglion, Subfamily, Subfossorial, Subgalea, Subgenal Areas, Subgenal Ridge, Subgenal Sulcus, Subgeneric Name, Subgeniculate, Subgenital, Subgenital Plate (Vulvar Lamina), Subgenual Organ, Subgenus, Subgenera, Subgerminal Cavity, Subglossal, Subhepatic Carina, Subhepatic Region, Subimago (Pseudimago, Dun), Subintestinal Vessel (Ventral Vessel), Subisomyarian, Sublingual, Sublittoral (Sublitoral), Submalleate, Submargin, Submarginal, Submarginal Area, Submarginal Cell, Submarginal Striae, Submarginal Tubercles, Submarginal Vein, Submedia, Submedian Cell, Submedian Denticle, Submedian Groove, Submedian Lobes, Submedian Tooth, Submentapleural Carina, Submentum, Submetacentric, Submission, Subneural, Subocular Sulcus, Suboesophageal Ganglion, Subopercular, Suboptic, Suboral, Suborbital Region, Suborbital Spine, Subovate, Subpectinate, Subpedunculate, Subphylum, Subquadrangle, Subpolar, Subpopulation, Subradial Tentacles, Subradius (Subradial), Subradular, Subradular Organs, Subradular Sac, Subrostrum, Subscaphium, Subscapular, Subscutellum (Postscutellum), Subsessile, Subsocial, Subspecies, Substernal, Substitute/Substitute King , Substitutional Load, Substratum, Subtegular Ridge, Subtegulum, Subtentacular Canals, Subterminal, Subtidal (Sublittoral) Zone, Subtorma, Subtriangle, Subtribe, Subtropical Zone, Subtylostyle, Subtypical, Subulate, Subumbonal, Subumbonate, Subumbral Pits, Subumbrella, Subuncinate, Subventral Esophageal Glands, Subvibrissal Setae/Setulae, Subvital, Succession, Successive Polyandry, Succiput, Succursal Nest, Sucker, Sucking Disc, Sucking Lice, Suctorial, Sugent, Sugescent, Sulcate, Sulcation, Sulci, Sulciform, Sulcus (Sulculus, Fissure), Sulphur Butterflies, Summation, Summer Egg, Sun Animalcule, Sun Flies, Sun Spiders, Sunbathing, Sundaland, Super-, Superdominance, Superfemale, Superfemale, Superficial Epicuticular Layer, Superficial, Supergene, Superior, Superior Appendages, Superior Hemiseptum, Superlinguae, Supermale, Supernormal Excitability, Supernormal Stimulus, Supernumerary Chromosome, Supernumerary Crossveins, Supernumerary Segment, Superomarginal Plates, Superorganism, Superovulation, Superparasite, Superposition Eye (Clearzone Eye), Superposition Image, Supersedure, Superspecies, Supersuppreser, Supinate, Supplement, Supplementary Organs, Supplementary Reproductives, Suppresser Mutation, Suppression, Supra, Supra-Alar Bristles, Supra-Anal, Supra-Anal Hook, Supra-Anal Opening, Supra-Anal Pad, Supra-Anal Plate, Supra-Apical Foramen, Supra-Branchial, Supra-Caudal, Supra-Cerebral, Supra-Cheliceral Limbus, Supra-Clypeal Area, Supra-Episternum, Supra-Esophageal Ganglion, Supra-Litoral (Supra-Littoral), Supraneural Pore, Supraneuston, Supra-Ocular, Supra-Oesophageal (Suprapharyn-Geal, Hyperpharyngeal, Cerebral) Ganglion, Supraorbital Carina, Supraspecific, Supra-Spinal, Supra-Squamal Ridge, Supra-Stigmal, Supra-Tidal (Supra-Littoral) Zone, Supra-Tympanal Organ, Suranal, Suranal Plate, Surface Ornamentation, Surface Pheromone, Surpedal Area Or Lobe, Surstyli (Suprastyli), Survival of The Fittest, Suspension Feeder, Suspensor, Suspensorium, Suspensory Fold of The Schwann Cell, Suspensory Muscles, Sustentacular, Sustentacular Cells, Sustentator (Sustentor), Sutural Angle, Sutural Edge, Sutural Laminae, Sutural Plate, Sutural Shelf, Sutural Sinus, Sutural Slope, Suture, Suture Zone, Swallowtail Butterflies, Swammerdam’s Vesicle, Swan Animalcule, Swarm (Synhesma), Swarm Cell (Swarm Spore), Swarming, Sweat Bees, Sweat Flies, Sweep Net, Sweepstake Dispersal Route, Swift Moths, Swimmerets, Swimming Bell, Swimming Crabs, Swimming Funnel, Swimming Ovaries, Swimming Plates, Sword-Tailed Crickets, Swordtails, Sycettida, Syconoid Sponge (Sycon Grade), Sycophgagous, Syllable , Sylleibid, Syllidae, Sylvan/Sylvestral/Sylvicolous, Symbasis, Symbiida/Symbiidae, Symbiogenesis, Symbiont (Symbiote), Symbiosis, Symbiote, Symbiotic, Symbranchiformes/Symbranchii, Symmetrical, Symmetrogenic Fusion, Symmetry, Symparasitism, Sympathetic, Sympatric Hybridization, Sympatric Introgression, Sympatric Speciation, Sympatric, Symphile (Symphily), Symphoresis, Symphyla, Symphynote, Symphypleona, Symphysis, Symphyta (Chalastogastra), Symplast, Symplesiomorph, Sympodite, Synanthropic (Synanthropism), Synapomorphic, Synaporium, Synaposematic, Synapse, Synaptic Cleft, Synaptic Junction, Synaptic Knobs, Synaptic Membrane, Synapticula, Synapticulum, Synaptidae, Synaptonemal Complex, Synaptomeres, Synaptorhabdic, Synaptotene, Synaptychus, Syncarida, Syncaryon, Syncerebrum, Syncheimadia, Synchorology, Synchronic, Synchronization, Synchronizer (Zeitgeber), Synchronogamic, Synchronous Hermaphrodite, Synchronous Muscles, Syncitium, Synclerobiosis, Synconoid, Syncryptic, Syncytium (Symplast, Syncitium, Syncytiotrophoblast), Syndesis, Syndiacony, Synecete, Synechthrans, Synechthry, Synecology, Synectic, Synergic, Synergism, Syngametic, Syngamic Sex Determination, Syngamidae, Syngamy, Syngen, Syngeneic, Syngenesis, Syngenetic, Syngenic, Syngnaths, Syngonic, Syngraft, Synhesma, Synistate, Synizesis, Synkaryon (Synkaryotic), Synlestidae (Chlorolestidae), Synlophe, Synoecius, Synoecious, Synoecy, Synoekete (Synoecete), Synoenocytes, Synomone, Synonym, Synpolydesmic, Synscleritous, Syntagma, Syntechnic, Synteliidae, Syntexidae, Synthemidae (Synthemistidae), Synthetic Theory, Synthorax (Pterothorax), Syntomidae, Syntrophy, Syntropic, Synxenic, Synzoea, Synzoochorous, Synzoospores, Syringe, Syringeal, Syringium, Syringograde, Syringophilidae, Syrphidae, Systaltic, Systellommatophora, Systema Naturae, Systematics, Systemic, Syzygium, Syzygy, Szidat’s Rule.