|1.||metameric segmentation, Also called: segmentation the division of an animal into similar segments (metameres). In many vertebrates it is confined to the embryonic nervous and muscular systems|
|2.||chem a type of isomerism in which molecular structures differ by the attachment of different groups to the same atom, as in CH3OC3H7 and C2H5OC2H5|
metamerism me·tam·er·ism (mə-tām'ə-rĭz'əm)
The condition of having the body divided into metameres, exhibited in most animals only in the early embryonic stages of development.