'Metameric' definitions:
Definition of 'metameric'
From: WordNet
Definition of 'Metameric'
From: GCIDE
- Metameric \Met`a*mer"ic\, a. [Pref. meta- + Gr. ? 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]
- Note: 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]
Definition of 'metameric'
From: GCIDE
- isomeric \i`so*mer"ic\ ([imac]`s[-o]*m[e^]r"[i^]k), a. [Iso- + Gr. me`ros part: cf. F. isom['e]rique.] (Chem.) Having the same chemical composition and molecular weight; having the same number of atoms of each kind in the molecule; -- said of chemical compounds with known chemical composition. This property used to be called metameric to distinguish it from other forms of isomerism. [PJC]
- Note: Formerly the term isomeric applied also to comopounds having the same percentage chemical composition, even if the number of atoms in a molecule differed. In the
- 1913 dictionary isomeric was defined as: "Having the same percentage composition; -- said of two or more different substances which contain the same ingredients in the same proportions by weight, often used with with. Specif.: (a) Polymeric; i. e., having the same elements united in the same proportion by weight, but with different molecular weights; as, acetylene and benzine are isomeric (polymeric) with each other in this sense. See Polymeric. (b) Metameric; i. e., having the same elements united in the same proportions by weight, and with the same molecular weight, but with a different structure or arrangement of the ultimate parts; as, ethyl alcohol and methyl ether are isomeric (metameric) with each other in this sense. See Metameric." [1913 Webster]