·noun A convex body or surface.
II. Convex ·adj Rising or swelling into a spherical or rounded form; regularly protuberant or bulging;
— said of a spherical surface or curved line when viewed from without, in opposition to concave.
·adj Concave on one side and convex on the other, as an eggshell or a crescent. II. Concavo-convex ...
Webster's Dictionary of the English Language
·adj Convex on both sides; double convex. ·see under Convex, a. ...
·adj Plane or flat on one side, and convex on the other; as, a plano-convex lens. ·see <<Convex>>, a...