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Definition of cavity

cavity

/ˈkæv.ə.ti/
cav · i · ty
Plural:cavities
•
Adjective:cavitary
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cavity Lexical Profile

cavity Game Scores & Validity

• noun

1

A decayed part of a tooth resulting in a small hole or pit in the enamel.

Example

"The dentist recommended reducing sugary snacks after finding a small cavity in her back molar."

2

An empty space, hole, or hollow area within a solid object.

Example

"Water had seeped into the hidden cavity behind the stone wall over the winter."

3

A natural hollow space or chamber within the body or inside an organ that houses and protects internal tissues.

Example

"The ribs and sternum form a protective cage around the thoracic cavity."

Synonyms
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Antonyms
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• Rhymes for cavity

• Nearby Words

cavewoman
caviar
caving
cavity
cavort
cavy
caw

Word Origin & Etymology

Borrowed in the 16th century from Middle French cavité, from Late Latin cavitas ('hollowness'), derived from Latin cavus ('hollow, excavated'), which is also the root of 'cave' and 'excavate'.

Cite this Entry

Wordmom. (2026). Definition of Cavity. In Wordmom Dictionary. Retrieved Nov 5, 2026, from https://wordmom.com/dictionary/cavity
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