/ kɒnˈkeɪv; NAmE kɑːnˈk-; ˈkɑːn-/ adjective
( of an outline or a surface ) curving in :
a concave lens / mirror
OPP convex
••
WORD ORIGIN
late Middle English : from Latin concavus , from con- together + cavus hollow.
/ kɒnˈkeɪv; NAmE kɑːnˈk-; ˈkɑːn-/ adjective
( of an outline or a surface ) curving in :
a concave lens / mirror
OPP convex
••
WORD ORIGIN
late Middle English : from Latin concavus , from con- together + cavus hollow.
Oxford Advanced Learner's English Dictionary. Оксфордский английский словарь для изучающик язык на продвинутом уровне. 2005