cavity

Etymology

Mid 16th century borrowing from Middle French cavité or Late Latin cavitās, from cavus (“hollow, excavated, concave”) + -tās (“-ity”, nominal suffix).

noun

  1. A hole or hollow depression in a solid object.
    1. (anatomy) A hollow area within the body.
  2. (dentistry) A small or large hole in a tooth caused by caries; often also a soft area adjacent to the hole also affected by caries.
    Jim got two cavities filled at the dentist's office yesterday.

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