Do you really want to send Webster 1913 a message saying you like their work?
Me*tam"er*ism (?), n.
1. Biol.
The symmetry of a metameric structure; serial symmetry; the state of being made up of metameres.
2. Chem.
The state or quality of being metameric; also, the relation or condition of metameric compounds.
© Webster 1913.