grĕgātim, adv. [grex], in flocks, herds, or swarms.
I Lit., of animals: haec facienda, si gregatim pecora laborant: illa deinceps, si singula, Col. 6, 5 fin. : apes rempublicam habent, consilia privatim ac duces gregatim, Plin. 11, 5, 4, § 11: elephanti gregatim semper ingrediuntur, id. 8, 5, 5, § 11; 9, 15, 18, § 47.—
II Transf., in troops or crowds : videtis cives Romanos gregatim conjectos in lautumias, Cic. Verr. 2, 5, 57, § 148; Just. 13, 8; Plin. 4, 12, 26, § 89: accidit, ut nova contra genera morborum gregatim sentirentur, i. e. among the common people , id. 26, 1, 3, § 4.