a. (sb.) Obs. [f. L. triāri-ī (see TRIARY) + -AN.] Consisting of triarii (see TRIARY); also allusively. b. sb. (pl.) The triarii.
1642. View of Print. Book int. Observat., 39. The Triarian legion, in which they put their last and chiefest strength.
1658. Phillips, Triarians.
1663. Cowley, Ode Restor. Chas. II., xi. Let our weak Days lead up the Van; Let the brave Second and Triarian-Band, Firm against all impression stand.
1715. M. Davies, Athen. Brit., I. 65. His best Veteran and Triarian, Regular Troops.