cavity

UK: /ˈkævɪti/ US: /ˈkævɪti/ ,(kav′i tē)

Inflections of 'cavity' (n): npl: cavities

WordReference Random House Learner's Dictionary of American English © 2025

cav•i•ty /ˈkævɪti/   n. [countable] , pl. -ties. 

1. any hollow place in a solid object.
2. a hollow space within the body:
   in the chest cavity.
3. Dentistry a pit in a tooth, produced by decay.

WordReference Random House Unabridged Dictionary of American English © 2025

cav•i•ty  (kav′i tē), n., pl. -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.

• Late Latin cavitās hollowness, equivalent. to Latin cav(us) hollow + -itās -ity
• Middle French cavite
• 1535–45

cav′i•tied, adj. 
Synonyms

• 1. See hole. 

Collins Concise English Dictionary © HarperCollins Publishers::

cavity / ˈkævɪtɪ/ noun ( -ties)

1. a hollow space; hole
2. a soft decayed area on a tooth
   See caries
3. any empty or hollow space within the body

Etymology: 16th Century: from French cavité, from Late Latin cavitās, from Latin cavus hollow