cavity

noun
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 Fluoride is a cavity-fighting ingredient found in most toothpaste and dental products. Celeste Polanco, Essence, 1 Sep. 2021 Above, one of the woodpeckers leaves the nest cavity after delivering food to chicks. Jim Williams, Star Tribune, 6 July 2021 Guests descend a ramp to enter into the cavity of the original World Trade Center complex. BostonGlobe.com, 21 June 2021 The unique interior cavity design is sturdy and provides better rust-resistance than other brushes. Chris Hachey, BGR, 15 June 2021 In short, fluoride is excellent for cavity prevention or reducing the development of small cavities. Celeste Polanco, Essence, 1 Sep. 2021 The nerves of the nasal cavity regrow when they are damaged or cut, and this healing is directed by special glial cells, which usher neurons along the path from the nose membrane to the brain. Isaac Chotiner, The New Yorker, 12 Aug. 2021 Lasers will replace traditional dental drills for many procedures, including drilling a cavity. Evan Macdonald, cleveland, 1 July 2021 In 2020, the Food and Drug Administration approved a coronavirus antigen test that could quickly detect virus proteins from swabs that were swiped inside the naval cavity. BostonGlobe.com, 9 May 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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Learn More About cavity

Dictionary Entries Near cavity

cavitoma

cavity

cavity oscillator

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Statistics for cavity

Last Updated

16 Sep 2021

Cite this Entry

“Cavity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cavity. Accessed 21 Sep. 2021.

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More Definitions for cavity

cavity

noun

English Language Learners Definition of cavity

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

cavity

noun
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.

cavity

noun
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

Britannica.com: Encyclopedia article about cavity

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