Source : Webster's Revised Unabridged Dictionary (1913)

Metameric \Met`a*mer"ic\, a. [Pref. meta- + Gr. ? part.]
   1. (Chem.) Having the same elements united in the same
      proportion by weight, and with the same molecular weight,
      but possessing a different structure and different
      properties; as, methyl ether and ethyl alcohol are
      metameric compounds. See {Isomeric}.

   Note: The existence of metameric compounds is due to the
         different arrangement of the same constituents in the
         molecule.

   2. (Biol.) Of or pertaining to a metamere or its formation;
      as, metameric segmentation.

Source : WordNet®

metameric
     adj : having the body divided into successive metameres or
           segments, as in earthworms or lobsters [syn: {segmental},
            {segmented}]