| trippet |
a projection or cam that strikes another mechanical part at regular intervals. |
| tripping |
moving lightly, nimbly, and quickly; fluent. |
| triptane |
a colorless liquid used as an antiknock additive to fuel, esp. airplane fuel. |
| triptych |
a set of three paintings or carved panels, hinged or fixed side by side. |
| tripwire |
a hidden wire that activates a trap, snare, or the like when tripped over. |
| trireme |
an ancient Greek or Roman galley, usu. a warship, with three tiers of oars on each side. |
| trisect |
to divide (a line, plane figure, or angle) into three equal parts. |
| triskaidekaphobia |
irrational fear of the number thirteen. |
| triskelion |
a design or figure consisting of three usu. curved legs, arms, or branches that radiate from a common center. |
| trismus |
continuous spasmodic contraction of the jaw muscles, esp. when caused by tetanus. |
| trisodium |
of a molecule, containing three sodium atoms. |
| trisomic |
having an extra chromosome in the cell in addition to the usual diploid number. |
| tri-state |
of or designating an area consisting of all or part of three neighboring U.S. states. |
| tristich |
a verse unit, poem, or stanza of three lines; triplet. |
| trisulfide |
a sulfide molecule containing three atoms of sulfur. |
| trisyllable |
a word having three syllables. |
| trite |
ineffective or stale because of frequent repetition; commonplace; hackneyed. |
| tritheism |
the belief that the three persons of the Christian Trinity are three separate, distinct gods. |
| triticale |
a high-protein grain formed by crossing wheat and rye. |
| tritium |
a radioactive isotope of hydrogen, usu. produced synthetically and used in nuclear weapons and radiobiology. (Cf. deuterium, protium.) |
| tritoma |
any of several lilylike African plants that bear dense spikes of red or yellow flowers. |