Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “concave”


adjective     /ˈkɒŋ.keɪv/ US  /ˈkɑːn-/
curving in: a concave lens → Compare convexProperties of circles and curves concavity     /ˌkɒnˈkæv.ɪ.ti/ US  /ˌkɑːn.kæv.ə.t̬i/ noun [C or U]
(Definition of concave adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of concave

Definitions of “concave” in other dictionaries

Word of the Day

tie the knot

to get married

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More