1. Noun.  A period of ten years.
  2. Noun.  ''(when referring to a named or numbered decade)'' Specifically, a period of ten years, beginning on January 1 of a year ending with a zero when written, and ending at midnight on December 31 of the year nine years later.
  3. Noun.  Any series or group of ten items.
  4. Noun.  A series of ten Hail Marys in the rosary. .
  5. Noun.  (rare) The interval between any two quantities having the ratio 10 to 1.

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