The Collaborative International Dictionary of English v.0.48:

Monetary \Mon"e*ta*ry\, a. [L. monetarius belonging to a mint.
   See Money.]
   Of or pertaining to money, or consisting of money; pecuniary.
   "The monetary relations of Europe." --E. Everett.
   [1913 Webster]

   Monetary unit, the standard of a national currency, as the
      dollar in the United States, the pound in England, the
      peso in Mexico, the ruble in Russia, the franc in France,
      the mark in Germany. Also, the standard of an
      international currency, such as the euro used in the
      European union.
      [1913 Webster +PJC]

WordNet (r) 3.0 (2006):

monetary
    adj 1: relating to or involving money; "monetary rewards"; "he
           received thanks but no pecuniary compensation for his
           services" [syn: monetary, pecuniary]