• synonyms


See more synonyms for cavity on Thesaurus.com
noun, plural cav·i·ties.
  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.
Show More

Origin of cavity

1535–45; < Middle French cavite < Late Latin cavitās hollowness, equivalent to Latin cav(us) hollow + -itās -ity
Related formscav·i·tied, adjectivesub·cav·i·ty, noun, plural sub·cav·i·ties.un·cav·i·tied, adjective


See more synonyms for on Thesaurus.com
1. See hole.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words

crater, dent, decay, void, vacuity, hollow, pocket, chamber, gap, atrium, hole, sinus, pit, basin, depression, socket, bursa, caries, armpit

Examples from the Web for cavity

Contemporary Examples

Historical Examples

British Dictionary definitions for cavity


noun plural -ties
  1. a hollow space; hole
  2. dentistry a soft decayed area on a toothSee caries
  3. any empty or hollow space within the bodythe oral cavity
  4. electronics See cavity resonator
Show More

Word Origin

C16: from French cavité, from Late Latin cavitās, from Latin cavus hollow
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

Word Origin and History for cavity


1540s, from Middle French cavité (13c.), from Late Latin cavitatem (nominative cavitas) "hollowness," from Latin cavus "hollow" (see cave (n.)).

Show More
Online Etymology Dictionary, © 2010 Douglas Harper

cavity in Medicine


  1. A hollow area within the body, such as a sinus cavity.
  2. A pitted area in a tooth caused by caries.
Show More
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

cavity in Science


  1. A hollow; a hole.
  2. A hollow area within the body.
  3. A pitted area in a tooth caused by caries.
Show More
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.