\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.