Rutherford

  1. Proper noun.  (surname, Scottish habitational) from a place where there was once a settlement in the Scottish borders.
  2. Noun.  An obsolete unit of radioactivity (symbol: rd), defined as the activity of a quantity of radioactive material in which one million nuclei decay per second.

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