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

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.
Recent Examples on the Web For those with gender dysphoria who are considering surgery, top surgery is often more in line with their aesthetic goals, as the technique prevents the side concavity and leaves some tissue that fills out the shadow or little fold in that area. Allure, 29 June 2021 The technique of this particular surgery leaves thinner skin flaps and a concavity on the lateral chest and can mean the total removal of the areola, which some people replace with tattoos. Allure, 29 June 2021 To serve labneh fresh, envision its cousins, hummus and baba ganoush, and schmear it on a platter into a round of attractive concavity, like an inverted Frisbee. James P. Dewan,, 21 Aug. 2019 As the migraine attack ended, the swelling would recede and return to a concavity. Katherine Foxhall, Time, 18 June 2019 Volume loss under the eye and concavity is the usual cause of dark circles. Crystal Martin, New York Times, 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, 23 Oct. 2012 See More

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.

First Known Use of concavity

15th century, in the meaning defined at sense 1

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

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Cite this Entry

“Concavity.” Dictionary, Merriam-Webster, Accessed 21 May. 2022.

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More Definitions for concavity


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


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