Source : Webster's Revised Unabridged Dictionary (1913)

Numismatics \Nu`mis*mat"ics\, n. [Cf. F. numismatique.]
   The science of coins and medals.

Source : WordNet®

numismatics
     n : the collection and study of money (and coins in particular)
         [syn: {numismatology}, {coin collecting}, {coin
         collection}]