imp. & p. p. of Try. Also adj. Proved; tested; faithful; trustworthy; as, a tried friend. [ 1913 Webster ]

a. See Trihedral. [ 1913 Webster ]

a. [ L. triennium the space of three years; tri- (see Tri-) + annus year. See Annual. ] 1. Continuing three years; as, triennial parliaments; a triennial reign. Howell. [ 1913 Webster ]

2. Happening, coming about, or appearing once in every three years; as, triennial elections; a triennial catalogue; a triennial visitation. T. Warton. [ 1913 Webster ]

n. Something which takes place or appears once in three years. [ 1913 Webster ]

adv. Once in three years. [ 1913 Webster ]

‖n. [ L., from tres, tria, three. ] (Rom. Antiq.) A Roman copper coin, equal to one third of the as. See 3d As, 2. [ 1913 Webster ]

n. [ From Try. ] 1. One who tries; one who makes experiments; one who examines anything by a test or standard. Boyle. [ 1913 Webster ]

2. One who tries judicially. [ 1913 Webster ]

3. (Law) A person appointed according to law to try challenges of jurors; a trior. Burrill. [ 1913 Webster ]

4. That which tries or approves; a test. Shak. [ 1913 Webster ]

n. [ L. trierarchus, Gr. &unr_;; &unr_; a trireme + &unr_; a leader, a chief. ] (Gr. Antiq.) (a) The commander of a trireme. (b) At Athens, one who (singly, or jointly with other citizens) had to fit out a trireme for the public service. [ 1913 Webster ]

n.; pl. Trierarchises [ Gr. &unr_;. ] The office duty of a trierarch. [ 1913 Webster ]

a. [ L. trietericus, Gr. &unr_;, fr. &unr_; (sc. &unr_;) a triennial festival; &unr_; (see Tri-.) + &unr_; a year. ] Kept or occurring once in three years; triennial. [ R. ] J. Gregory. [ 1913 Webster ]