| Convex 1. (a.) Rising or swelling into a rounded form; as, a convex lens -- opposed to concave. 2. (n.) A convex body or surface. Thesaurus Entries arched, arciform, arclike, arcual, bandy, bellied, bellylike, bowed, bowlike, bulging, concave, convexed, embowed, excurvate, excurvated, excurved, gibbose, gibbous, humpbacked, humped, humpy, hunched, hunchy, out-bowed, oxbow, rotund, round, rounded, rounded out, vaulted |