D defs.my
Entry 2 senses Webster, 1913

Metamerism

· Me·tam·er·ism · IPA
01 n. The symmetry of a metameric structure; serial symmetry; the state of being made up of metameres.
  1. 1.
    The symmetry of a metameric structure; serial symmetry; the state of being made up of metameres.(Biol.)
  2. 2.
    The state or quality of being metameric; isomerism due to different bonding patterns in two substances having the same molecular formula. Contrasted with steroisomerism or optical isomerism. Also, the relation or condition of metameric compounds.(Chem.)