Coemo, cóemis, pen. cor. coémi. pen. prod. coémptum, coémere. Cic.To buy: to buy with other.Merces coemptas supprimere. Vlp. Coemere & Vendere aliquid, contraria.Cic.Coémptio. Verb. Cic.A buying togither: also a solemnitie of the cinill law where the woman and man comming togither at a trothing, as it were, buy one the other.Facere coemptionem.Cic.
Lewis and Short: Latin dictionary
cŏ-ĕmo, ēmi, emptum, 3, v. a. (cf. the contracted form, 1. como), to purchase together, to buy up (class.): aliquid, Ter. Ad. 2, 2, 17; Caes. B. G. 1, 3; Cic. Verr. 2, 4, 59, 133; Cassius ap. Cic. Fam. 15, 19, 3; Hor. S. 1, 2, 9; Quint. 11, 1, 80; Suet. Vesp. 16 al.: coemptarum rerum pretia, id. Ner. 5; Juv. 14, 293.