Pronunciation (UK) IPA (key): /ˈkɒnvɛks/ (US) IPA (key): /ˈkɑnvɛks/ Audio (UK)(file) Adjective Positive convex Comparative none Superlative none If the surface of something is convex, it is curved like the outer surface of a sphere or bowl. Antonym: concaveWikiwand - on Seamless Wikipedia browsing. On steroids.Remove ads