quăterni, ae, a (gen. plur. quaternūm, Liv. 6, 22, 7; Col. 5, 5, 2; Plin. 9, 3, 2, § 4), adj. plur. [quattuor].
I Four each , by fours , four at a time : quaternos denarios in singulas vini amphoras exegisse, Cic. Font. 5, 9: primam aciem quaternae cohortes ex V. legionibus tenebant, i. e. four from each legion , Caes. B. C. 1, 83: saepe tribus lectis videas cenare quaternos, Hor. S. 1, 4, 86.—
II Four together , four at once : propter bis quaternas causas, Varr. L. L. 5, 1, 6; Aus. ldyll. 10, 60; Sedul. 2, 175; Plin. 28, 6, 17, § 64.