PRO

  1. (acronym) .  pressure retarded osmosis.
  2. Symbol.  (context, syntax) (n-g, A theoretical phonologically null pronoun) .
  3. Noun.  an advantage of something, especially when contrasted with its disadvantages (''cons'').
  4. Preposition.  In favor of.
  5. Noun.  a professional sportsman.
  6. Noun.  (colloquial) professional someone who is very good at something.

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