cavity

[kav-i-tee]
noun, plural cavities.
1.
any hollow place; hollow.
2.
Anatomy. a hollow space within the body, an organ, a bone, etc.
3.
a hollow space or a pit in a tooth, most commonly produced by caries. A cavity may be artificially made to support dental restorations.

Origin:
1535–45; < Middle French cavite < Late Latin cavitās hollowness, equivalent to Latin cav(us) hollow + -itās -ity

cavitied, adjective
subcavity, noun, plural subcavities.
uncavitied, adjective


1. See hole.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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World English Dictionary
cavity (ˈkævɪtɪ)
 
n , pl -ties
1.  a hollow space; hole
2.  dentistry See caries a soft decayed area on a tooth
3.  any empty or hollow space within the body: the oral cavity
4.  electronics See cavity resonator
 
[C16: from French cavité, from Late Latin cavitās, from Latin cavus hollow]

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

cavity
1540s, from M.Fr. cavité, from L.L. cavitas "hollowness," from L. cavus "hollow" (see cave).
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

cavity cav·i·ty (kāv'ĭ-tē)
n.

  1. A hollow area within the body, such as a sinus cavity.

  2. A pitted area in a tooth caused by caries.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
cavity   (kāv'ĭ-tē)  Pronunciation Key 
  1. A hollow; a hole.

  2. A hollow area within the body.

  3. A pitted area in a tooth caused by caries.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
Their abandoned nest cavities provide homes for other birds, small mammals, and
  other animals.
The natron, which was also put in packets and stuffed into the body cavities,
  dehydrated the body.
Hair follicles-skin cavities where individual hairs sit-are tiny organs that
  are able to regenerate themselves.
It aggressively defends nest cavities, possibly to the detriment of native
  species.
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