1. Proper noun.  (zodiac constellations) A constellation of the zodiac supposedly shaped like a crab.
  2. Proper noun.  (astrology) The Zodiac sign for the crab, ruled by the Moon and covering June 23 - July 23.
  3. Noun.  Someone with a Cancer star sign.
  4. Noun.  (medicine, oncology) A disease in which the cells of a tissue undergo uncontrolled (and often rapid) proliferation.

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This entry was last updated on RefTopia from its source on 3/20/2012.