Trimestris, & hoc trimestre. Plin. Of three monthes.Trimestres aues, vt turdi. Plin. Birdes that we see but three mouthes in the yeare.Trimestres an ni apud Arcades. Plin.
Lewis and Short: Latin dictionary
trĭmestris, e, adj. [ter-mensis], of three months.I.Adj.: haedi,
three months old
, Varr. R. R. 2, 3, 8: spatium, Plin. 37, 10, 59, 163: anni Arcadum, id. 7, 48, 49, 155: consul, Suet. Caes. 80: satio, i. e.
that ripens in three months
, Col. 2, 4, 9: semen, id. 2, 9, 7; so, triticum, Plin. 18, 7, 12, 69: aves, i. e. that remain with us but three months, id. 10, 25, 36, 73: annorum caelique vices, Aus. Edyll. 11, 24. — II.Subst.: trĭme-strĭa, ĭum, n., seeds that ripen three months after sowing, Col. 2, 12, 9; 11, 2, 20; Plin. 18, 26, 65, 240.