con·​cav·​i·​ty | \ kän-ˈka-və-tē How to pronounce concavity (audio) \
plural concavities

Definition of concavity

1 : a concave line, surface, or space : hollow
2 : the quality or state of being concave

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Examples of concavity in a Sentence

the concavity of the lens The lower back forms a concavity. The large concavities along the wall of the restaurant are like private rooms.
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Recent Examples on the Web

As the migraine attack ended, the swelling would recede and return to a concavity. Katherine Foxhall, Time, "How A Nurse With a Hole in Her Skull Changed The Medical History of Migraines," 18 June 2019 Volume loss under the eye and concavity is the usual cause of dark circles. Crystal Martin, New York Times, "How to Go Makeup-Free This Summer," 1 Aug. 2017 It’s backlit (though leaky), and the island-style keys have a gentle concavity to them, making touch typing fairly easy. Christopher Null, WIRED, "Review: Dell XPS 12," 23 Oct. 2012

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'concavity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of concavity

15th century, in the meaning defined at sense 1

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Statistics for concavity

Last Updated

22 Jun 2019

Look-up Popularity

Time Traveler for concavity

The first known use of concavity was in the 15th century

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English Language Learners Definition of concavity

: the quality or state of being concave : the quality of being curved inward
: a shape that is curved inward : a concave shape


con·​cav·​i·​ty | \ kän-ˈkav-ət-ē How to pronounce concavity (audio) \
plural concavities

Medical Definition of concavity

1 : a concave surface or space
2 : the quality or state of being concave

More from Merriam-Webster on concavity

Thesaurus: All synonyms and antonyms for concavity

Comments on concavity

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to take the place or position of

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