metameric

a. [ Pref. meta- + Gr. &unr_; part. ] 1. (Chem.) Having the same molecular formula, but possessing a different bonding structure and different properties; as, methyl ether and ethyl alcohol are metameric compounds. See Isomeric. [ 1913 Webster ]

☞ The existence of metameric compounds is due to different arrangements of the same atoms in the molecule. [ 1913 Webster ]

2. (Biol.) Of or pertaining to a metamere or its formation; as, metameric segmentation. [ 1913 Webster ]