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concavity

[kon-kav-i-tee] /kɒnˈkæv ɪ ti/
noun, plural concavities for 2.
1.
the state or quality of being concave.
2.
a concave surface or thing; cavity.
Origin
1350-1400
1350-1400; Middle English concavite < Late Latin concavitāt- (stem of concavitās). See con-, cave, -ity
Related forms
subconcavity, noun, plural subconcavities.
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Based on the Random House Dictionary, © Random House, Inc. 2014.
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British Dictionary definitions for subconcavity

concavity

/kɒnˈkævɪtɪ/
noun (pl) -ties
1.
the state or quality of being concave
2.
a concave surface or thing; cavity
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for subconcavity

concavity

n.

c.1400, from Old French concavité "hollow, concavity" (14c.) or directly from Latin concavitatem (nominative concavitas), from Latin concavus "hollow" (see concave).

Online Etymology Dictionary, © 2010 Douglas Harper
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subconcavity in Medicine

concavity con·cav·i·ty (kŏn-kāv'ĭ-tē)
n.
A hollow or depression that is curved like the inner surface of a sphere.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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