EUGENE M. MCCARTHY, PHD
-tactic or -taxial [Greek taxis arrangement, order] (1) pertaining to arrangement, order, pattern (chaetotactic); (2) pertaining to movement of an organism in response to a stimulus of the type indicated by the stem or prefix (barotactic).
-taph [Greek taphos funeral, tomb, grave] Burial, grave (epitaph).
-tarsal [Greek tarsos podos flat of the foot] Denotes the tarsus (tibiotarsal).
-taxia or -taxis or -taxy [Greek taxis arrangement, order] (1) arrangement, order, pattern (chaetotaxy, heterotaxis, homotaxis); (2) movement of an organism in response to a stimulus of the type indicated by the stem or prefix (barotaxis, phototaxis).
-thallus (pl -thalli) or -thallium (pl -thallia). [Latin thallus young green branch or shoot] Indicates a young branch or shoot of the type indicated by the stem or prefix (prothallium).
-thamnia or -thamnus [Greek thamnos bush, shrub] Denotes a shrub with the characteristic indicated by the stem or prefix (Lepidothamnus ).
-theca (pl -thecae) [Latin theca case, box, cover, envelope, container] Containing structure, covering, or sheath, of the type indicated by the stem or prefix (ootheca).
-thecium (pl -thecia). [Latin theca case, box, cover, envelope, container] Small containing structure, covering, or sheath, of the type indicated by the stem or prefix (acrothecium).
-there (also -therian) [Greek therion wild animal] Beast, mammal (titanothere).
-therium (pl -theria) [Greek therion wild animal] In taxonomic names: Beast, mammal (Prototheria).
-therm [Greek therme heat] An animal having the mode of temperature regulation indicated by the stem or prefix (endotherm).
-thermia [Greek therme heat] Having the temperature level indicated by the stem or prefix (hypothermia).
-thymia [Greek thymos mind, spirit] Condition of the mind indicated by the stem or prefix (schizothymia).
-tibial [Latin tibia pipe, shinbone] Denotes the tibia (femorotibial).
-tic See: -ic.
-tion See: -ion.
-tokous [Greek tokeus father, sire] Producing, bearing (arrhenotokous).
-toky [Greek tokeus father, sire] Parentage, production, bearing, reproduction (thelytoky).
-tome [Greek tomeus one that cuts] (1) cutting instrument (microtome); (2) part, section (gonotome).
-tomy [Greek tomos cutting, sharp] (1) cutting, incision (lobotomy).
-topia [Greek topos place] Denotes the state of being in a place or location (ectopia).
-topic [Greek topos place] Denotes placement or location (ectopic pregnancy).
-toxic [Latin toxicum poison] Poisonous, toxic (fetotoxic).
-toxin [Latin toxicum poison] A toxin of the type indicated by the stem or prefix (batrachotoxin, hemotoxin, neurotoxin).
-trema or -treme (pl -tremata) [Gk trema hole] Hole, opening or orifice (monotreme).
-trichia or -trichy [Greek thrix hair] Condition of having hair of the type, or in the state, indicated by the stem or prefix (leukotrichia).
-trichium (pl -trichia) [Greek thrix hair] A hair of the type indicated by the stem or prefix (microtrichium).
-trope [Greek tropos turn, direction, way] One exhibiting a tropism in response to the sort of stimulus indicated by the stem or prefix (heliotrope).
-troph [Greek trophe nourishment, food] One nourished or growing in the manner indicated by the stem or prefix (autotroph).
-trophic [Greek trophe nourishment, food] Nourished or growing in the manner indicated by the stem or prefix (autotroph).
-trophy [Greek trophe nourishment, food] Nourishment or growth of the type indicated by the stem or prefix (atrophy).
-tropia or -tropism or -tropy [Greek tropos turn, direction, way] The manifestation of a tropism in response to the sort of stimulus indicated by the stem or prefix (phototropism).
-tropic or -tropous [Greek tropos turn, direction, way] Exhibiting a tropism in response to the sort of stimulus indicated by the stem or prefix (homotropous).
-tropium [Greek tropos turn, direction, way] An organism exhibiting a tropism in response to the stimulus indicated by the stem or prefix (Heliotropium ).
-ty [English equivalent of Latin -tas] Quality, state, condition (toxicity).
-type [Latin typus figure, pattern, type, model] Something that is a figure, pattern, type, or model of the kind indicated by the stem or prefix (karyotype).
-typic [Latin typus figure, pattern, type, model] Of or pertaining to the kind of figure, pattern, type, or model indicated by the stem or prefix (karyotypic, polytypic).
-typy [Latin typus figure, pattern, type, model] Condition of being a figure, pattern, type, or model of the kind indicated by the stem or prefix (homotypy).
-ula or -ulae or -ule or -ulum or -ulus [English -ule from Latin diminutive endings -ulus, -ula, -ulum, -ulae] Small one(s) (blastula).
-ulnar [Latin ulna forearm] Denotes the ulna (humeroulnar, radioulnar).
-um See: -ium.
-ura or -uran or -urus [Greek oura tail] One(s) having the condition of the tail(s) indicated by the stem or prefix (Anura).
-uria [Greek ouron urine] Denotes a condition of the urine (albuminuria, phenylketonuria, pyuria, saccharuria).
-valent [Latin valens potent] During synapsis in meiotic prophase I: composed of the number of homologous chromosomes indicated by the prefix (bivalent, quadrivalent, trivalent).
-vora [Latin vorare to swallow, devour] In taxonomic names: One that eats the thing indicated by the prefix or stem (Carnivora, Insectivora).
-vore [Latin vorare to swallow, devour] An organism that eats the thing indicated by the prefix or stem (carnivore, insectivore).
-vorous [Latin vorare to swallow, devour] Eating the thing indicated by the prefix or stem (carnivorous, insectivorous).
-ward or -wards [Old English suffix -weard; of Germanic origin, but related to Latin vertere to turn] In the direction of the thing indicated by the stem or prefix (upward, homewards, toward).
-xylon [Greek xylon wood] (1) in taxonomic names: organism(s) having wood of a type or a relationship to wood of a type indicated by the stem or prefix; (2) wood (Trochetiopsis erythroxylon ).
-y (also -ey) [Old English -ig] comparative: -ier, superlative: -iest (1) characterized by, abundant in (woodsy); (2) made of, containing (clayey); (3) similar to, like (summery);
-yl In chemistry: denotes a radical (methyl).
-ylene In chemistry: denotes a bivalent hydrocarbon radical (methylene).
-zoa (sing -zoan) [Greek zoon animal] Denotes animals or, more broadly, living things (protozoa).
-zoic [-zoa + -ic] (1) having the animal mode of existence indicated by the stem or prefix (coprozoic); (2) relating to animal life or, more broadly, to life of any kind (Mesozoic).
-zygous [Greek zygon yoke, tying element] (1) yoked; (2) having a zygotic nature of a sort indicated by the stem or prefix (heterozygous).
-zyme [Greek zymosis fermentation] Enzyme (allozyme, enzyme).