1. Noun.  (biology) A state of inactivity and metabolic depression during summer: the summer version of hibernation.
  2. Noun.  (botany) The arrangement (vernation) of the parts of a flower inside a bud; prefloration.
  3. Noun.  (obsolete) The spending or passing of a summer.

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