Biology Prefixes - T

tachy- [from Greek tachos speed] Swift, rapid, accelerated (tachygenesis).

taen- or ten- [from Greek tainia band, headband] Denotes tapeworm (s) (teniform, teniasis).

tars- or tarso- [from Greek tarsos podos flat of the foot] Denotes the tarsus (tarsotibial).

taut- or tauto- [from Greek tautos the same, identical] Identical (tautomerism).

tax- or taxo- [from Greek taxis arrangement, order] Denotes arrangement or ordering (taxonomy).

teg- or tegum- [from Latin tegmen covering, protection; clothing, armor, skin, shell, husk] Covering, skin, armor (tegmen).

tel- or tele- or telo- [from Greek telos end] End, completion (telediastolic, telomere, telophase).

tele- [from Greek tele distant] Distant (teleceptor).

ten- See: taen-.

tera- [prefix in International System of Units] 10¹² (terabyte).

tetra- [from Greek tetra four] Four, having four parts (tetramer, tetraploid, tetrapod).

tetrahydr- or tetrahydro- [tetra- + hydro-] Indicates a molecule containing four hydrogen atoms (tetrahydrofolate).

thec- or theci- or theco- [from Latin theca case, box, cover, envelope, container] Sac, capsule, sporecase (theca).

therm- or thermo- [from Greek therme heat] Heat, hot (thermolabile).

thio- [from Greek theion sulfur] Sulfur (thiophil).

thorac- or thoraco- [from Latin thorax chest] Chest (thoracoepigastric).

thrombo- [from Greek thrombos lump, clot of blood] Denotes a thrombus (thromboclasis).

thyro- or thyroid- (also, rarely: thyreo-) [from Greek thyreos oblong shield] Refers to the thyroid gland (thyrohyoid, thyroidectomy) or, more broadly, to anything shield-shaped (thyroid).

tibi- or tibio- [from Latin tibia pipe, shinbone] Denotes the tibia (tibiofemoral).

toco- (also, rarely: toko-) [from Greek tokeus father, sire] Denotes to birth (tocology).

tox- or toxi- or toxico- [from Greek toxon bow] (1) arched, bowlike (Toxodonta) (2) arrow-shaped (Toxoglossa).

tox- or toxic- or toxico- [from Latin toxicum poison] Poisonous, toxic (toxicity).

trache- or tracheo [from Greek trachelos throat, neck] Relating to the trachea (trachealgia).

trachel- or trachelo [from Greek trachelos throat, neck] Denotes neck (trachelomastoid = a neck muscle connected to the mastoid process).

trans- [from Latin trans across, beyond, on the other side] Across (transfection, transposon).

tri- [from Greek tri thrice] Three, triple (trichocyst).

trich- or tricho- [from Greek thrix the hair of the head] Hair, filament (tricuspid).

tripl- or tripla- or triplo- [from Greek triploos threefold, triple] Triple (triploblastic, triploid).

troph- or tropho- [from Greek trophe nourishment, food] Relating to nutrition (trophoblast).

tropo- [from Greek tropos turn, direction, way] turn, rotation (tropometer).

trypan- or trypan- [from Latin trypanon auger] (1) borer, auger, spiral (Trypanosoma); (2) trypanosome (trypanosomiasis).

tubo- [from Latin tubus pipe, trumpet] Denotes a tube (tuboperitoneal).

tympan- or tympano- [from Latin tympanus drum] Relating to the tympanic membrane (tympanotomy).