portion (subs.) Copy link Outline I. A part1. pars2. portio (share, divisionII. Of a wife • portion (subs.): I. A part: 1. pars: v. part. 2. portio (share, division: not in Cic.): Just.: Plin.: v. share. II. Of a wife: dos, dōtis, f.: v. dower.