Cŏn'vex1, a.
[Lat. convexus, from convehere, to bring together; Fr. convexe, Sp. convexo, It. convesso.] 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.
Drops of water naturally form themselves into figures with a convex surface. Whewell.