Tropic

  1. Noun.  one of two specific lines of latitude that divide the Northern and Southern hemispheres, respectively; the Tropic of Cancer and the Tropic of Capricorn.
  2. Noun.  Either of the two parallels of latitude 23°27′north and south of the equator; the farthest points at which the sun can be directly overhead; the boundaries of the torrid zone or tropics.
  3. Adjective.  Of, or relating to the tropics; tropical.
  4. Adjective.  (qualifier, weather) hot and humid.
  5. Adjective.  (biochemistry) (''noncomparative'') Having the quality of indirectly inducing a biological or chemical change in a system or substrate.

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