cav·​i·​ty | \ ˈka-və-tē How to pronounce cavity (audio) \
plural cavities

Definition of cavity

1 : an unfilled space within a mass especially : a hollowed-out space
2 : an area of decay in a tooth : caries

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Examples of cavity in a Sentence

Some birds nest in tree cavities. I had two cavities filled at the dentist's.
Recent Examples on the Web The imaging might show that there's some fluid in your abdominal cavity, but that alone might not be enough to make a diagnosis. Colleen Murphy,, 4 Oct. 2021 He was shot once in the leg and once in the arm and that bullet traveled into his chest cavity. Paul Larosa, CBS News, 8 Sep. 2021 Tubes are inserted into your chest cavity to clear out the air that has leaked there. Karen Kaplan Science And Medicine Editor, Los Angeles Times, 31 Aug. 2021 If your roller brush looks grimy, wipe down the cavity and brush guard before putting the brush back. Kristina Mcguirk, Better Homes & Gardens, 24 Sep. 2021 Spoon some of the Caper-raisin relish into each squash cavity. Tribune News Service, cleveland, 20 Sep. 2021 This may reduce the number of sperm entering the uterus, impacting the uterus shape and lining, and affecting blood flow to the uterine cavity. Noel Cody, Essence, 16 Sep. 2021 Silver maples tend to develop cavities that are sought by cavity-nesting birds and mammals such as raccoons, opossums, squirrels, owls, woodpeckers and others. Jennifer Rude Klett, Milwaukee Journal Sentinel, 16 Sep. 2021 Experts from Gabon’s Agence Nationale des Parcs Nationaux (ANPN) used a cavity in the cave’s roof to access the burials. Isis Davis-marks, Smithsonian Magazine, 9 July 2021

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'cavity.' 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 cavity

1541, in the meaning defined at sense 1

History and Etymology for cavity

borrowed from Middle French & Late Latin; Middle French cavité, borrowed from Late Latin cavitāt-, cavitās, from Latin cavus "hollow, concave" + -itāt-, -itās -ity — more at hole entry 1

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Dictionary Entries Near cavity



cavity oscillator

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Statistics for cavity

Last Updated

10 Oct 2021

Cite this Entry

“Cavity.” Dictionary, Merriam-Webster, Accessed 17 Oct. 2021.

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More Definitions for cavity



English Language Learners Definition of cavity

: a hole or space inside something
: a hole formed in a tooth by decay


cav·​i·​ty | \ ˈka-və-tē How to pronounce cavity (audio) \
plural cavities

Kids Definition of cavity

1 : a small hole formed in a tooth by decay
2 : a hollow place The explosion left a cavity in the ground.


cav·​i·​ty | \ ˈkav-ət-ē How to pronounce cavity (audio) \
plural cavities

Medical Definition of cavity

1 : an unfilled space within a mass
2 : an area of decay in a tooth : caries

More from Merriam-Webster on cavity

Nglish: Translation of cavity for Spanish Speakers

Britannica English: Translation of cavity for Arabic Speakers Encyclopedia article about cavity


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