Meaning of CONVEX in English

CONVEX

con ‧ vex /ˌkɒnˈveks◂, kən-, ˈkɒnveks $ ˌkɑːnˈveks◂, kən-, ˈkɑːnveks/ BrE AmE adjective

[ Date: 1500-1600 ; Language: Latin ; Origin: convexus ]

curved outwards, like the surface of the eye OPP concave :

a convex lens

a convex mirror

—convexly adverb

—convexity /kənˈveksəti, kənˈveksɪti/ noun [uncountable and countable]

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.