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fissure Hear it!

fissure definition

fis·sure (fis̸h′ər)

noun

  1. a long, narrow, deep cleft or crack
  2. a dividing or breaking into parts
  3. Anat. a groove between lobes or parts of an organ, as in the brain
  4. Med. a break or ulceration where skin and mucous membrane join anal fissure

Etymology: ME < OFr < L fissura < fissus: see fission

transitive verb, intransitive verb fissured -·sured, fissuring -·sur·ing

to break into parts; crack or split apart

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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