Tridymite, trid′i-mīt, n. a brittle mineral composed of silica, which occurs in various acid igneous rocks in the form of thin transparent six-sided plates, several of which are usually grouped together.
Tried. See Try.
Triennial, trī-en′yal, adj. continuing three years: happening every third year.—adv. Trienn′ially. [L. triennis—tres, three, annus, a year.]
Trier, trī′ėr, n. one who tries by experiment: one who tries, as a judge: one of Cromwell's commissioners for examining into the qualifications of ministers: (Shak.) one who brings to the test, a test.
Trierarch, trī′ėr-ärk, n. the commander of an ancient Greek trireme—also a person obliged to furnish ships to the state.—adj. Trī′erarchal.—n. Trī′erarchy, the office of trierarch: the system of requisitioning vessels from wealthy citizens. [Gr. triērēs, a trireme, archein, to rule.]
Trieteric, -al, trī-e-tėr′ik, -al, adj. triennial. [Gr., treis, three, etos, a year.]
Trifacial, trī-fā′shal, adj, threefold and pertaining to the face, esp. of the fifth cranial nerve.—n. the trigeminal nerve. [L. tres, three, facies, face.]
Trifarious, trī-fā′ri-us, adj. arranged in three rows: facing three ways.
Trifid, trī′fid, adj. three-cleft.
Trifle, trī′fl, v.i. to act or talk lightly: to indulge in light or silly amusements: to waste or spend idly or unprofitably (with).—n. anything of little value: a light confection of whipped cream or white of egg, with fruit, wine, &c.—n. Trī′fler.—adj. Trī′fling, of small value or importance: trivial.—adv. Trī′flingly.—n. Trī′flingness. [O. Fr. trufle, dim. of truffe, a gibe, also a truffle.]