TRIADIC
Tri*ad"ic, a. (Chem.)
Defn: Having the characteristics of a triad; as, boron is triadic.
TRIAKISOCTAHEDRON
Tri"a*kis*oc`ta*he"dron, n. Etym: [Gr. octahedron.] (Crystalloq.)
Defn: A trigonal trisoctahedron.
TRIAL
Tri"al, n. Etym: [From Try.]
1. The act of trying or testing in any manner. Specifically: — (a) Any effort or exertion of strength for the purpose of ascertaining what can be done or effected. [I] defy thee to the trial of mortal fight. Milton.
(b) The act of testing by experience; proof; test. Repeated trials of the issues and events of actions. Bp. Wilkins.
(c) Examination by a test; experiment, as in chemistry, metallurgy, etc.
2. The state of being tried or tempted; exposure to suffering that tests strength, patience, faith, or the like; affliction or temptation that exercises and proves the graces or virtues of men. Others had trial of cruel mockings and scourgings. Heb. xi. 36.
3. That which tries or afflicts; that which harasses; that which tries the character or principles; that which tempts to evil; as, his child's conduct was a sore trial. Every station is exposed to some trials. Rogers.