| torpid | adj. | dormant, unmoving; sluggish, inactive; lacking vigor, apathetic | ||
| tortuous | adj. | twisty | ||
| torturous | adj. | excruciating | ||
| totipotent | adj. | capable of becoming anything (said of cells able to become any type of cell in an embryo) | biology | |
| tow | n. | shorter fibers of flax separated from the longer more useful strands | ||
| toxophilite | n. | a lover or devotee of archery | ||
| tractable | adj. | easily led or managed; malleable | ||
| traduce | v. | to speak of someone in a malicious and false way, to slander; to transmit (from one person or generation to another) | ||
| traducianism | n. | doctrine that the soul is generated from the parents at the moment of conception | ||
| trainband | n. | civilian militia company of London and other areas, during Stuart rule and after | ||
| trammel | v. | to constrain, to hinder; to entangle, to snare | ||
| translucid | adj. | transparent, translucent; permitting the passage of light without allowing perfect vision of objects behind | ||
| Transoxania | n. | region beyond the Oxus River, northeast of the historical Persian province of Khorasan | ||
| transpicuous | adj. | transparent, easily understood | ||
| transpontine | adj. | of or related to (something on) the farther side of a bridge; of or related to the area south of the Thames river in London; of or related to sensational plays of the 19th Century presented in the area south of the River Thames | ||
| transude | v. | to ooze through | ||
| trapezium | n. | irregular quadrilateral, four-sided plane rectilinear figure not a parallelogram | ||
| trebuchet | n. | medieval siege engine using a sling at the end of a counter-weighted arm to hurl projectiles at an enemy’s position | ||
| treen | adj. | made wholly of wood | ||
| trenail | n. | hardwood pin used to fasten together timbers (also treenail) | ||
| trenchant | adj. | incisive, cutting, biting | ||
| trews | n. | close-fitting trousers, often of tartan pattern | ||
| tribadism | n. | lesbianism | ||
| triblet | n. | conical tapering shaft used for adjusting size of metal objects such as rings | ||
| trichiliocosm | n. | third order world of thousands of thousands of worlds, conception of universe of universes, higher power universe of billions of universes | ||
| trichotillomania | n. | mental disorder in which the sufferer undergoes strong urges to pull out his or her hair | ||
| trichotomy | n. | division into three | ||
| triolet | n. | eight-line poem having rhyme scheme abaaabab with 1st line repeated as the 4th and 7th lines, and the 2nd as the 8th | ||
| triphibious | adj. | able to move on land or water and in air | ||
| tripos | n. | examination for bachelor’s degree at Cambridge; courses taken in preparation for such exams | ||
| tripper | n. | excursionist, one who goes on a trip | British | |
| triptyque | n. | temporary customs permit for a motor vehicle which serves as a vehicular passport | ||
| tripudiate | v. | to dance in joy, triumph, or contempt | ||
| trituration | n. | the reduction of a substance to a fine powder | ||
| trocar | n. | perforator enclosed in a cannula or metal tube used in surgery for draining fluids, etc. | ||
| tropology | n. | the use of tropes or figures of speech | ||
| tropopause | n. | atmospheric boundary layer between troposphere and stratosphere | ||
| trotter | n. | animal that trots; foot of an animal (esp. sheep or pig) used as food | ||
| trow | v. | to believe, to trust | ||
| troy weight | n. | system of measurement with a pound of 12 ounces, an ounce of 20 pennyweights, with a pennyweight of 24 grains | ||
| trucidate | v. | to massacre, to murder, to kill, to slaughter | ||
| truckle | v. | to submit timidly; to submit from unworthy motives | ||
| truckle bed | n. | low bed on casters for rolling it beneath a fixed bed when not in use | ||
| truculent | adj. | fierce, cruel, barbarous | ||
| trudge | v. | to walk laboriously or wearily | ||
| truncheon | n. | broken off piece; fragment of spear or lance | ||
| trunnion | n. | one of pair of pivots supporting something; cylindrical projection from cannon supporting same on its carriage | ||
| tucker | n. | linen, lace, or similar piece worn around top of bodice | ||
| tufa | n. | limestone formed from calcareous deposits from springs or lakes | ||
| tulwar | n. | Indian saber |
