incidence

  1. Noun.  The act of something happening; occurrence.
  2. Noun.  The extent, or the relative frequency of something happening.
  3. Noun.  (physics) The striking of radiation or a projectile upon a surface.
  4. Noun.  (epidemiology) A measure of the risk that a person develops a new condition within a specified period of time, usually a year.

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