SIR

  1. (initialism) .  (manufacturing) surface insulation resistance.
  2. Noun.  (British) The titular prefix given to a knight or baronet.
  3. Noun.  A man of a higher rank or position.
  4. Noun.  An address to a military superior of either sex.
  5. Noun.  An address to any male, especially if his name or proper address is unknown.
  6. Verb.  to address somebody using sir.

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