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cavity definition

cav·ity (kav′i tē)

noun pl. cavities -·ties

  1. a hole or hollow place
  2. a natural hollow place within the body the abdominal cavity
  3. a hollow place in a tooth, esp. when caused by decay
  4. Electronics a space enclosed by metal and with a rodlike projection in the center, used as a resonator, as with a magnetron to produce electromagnetic waves, esp. microwaves
    also called cavity resonator

Etymology: Fr cavité < LL cavitas < L cavus, hollow: see cave

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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