metamerism

[ muh-tam-uh-riz-uh m ]
/ məˈtæm əˌrɪz əm /

noun

Zoology.
  1. division into metameres, the developmental process of somite formation.
  2. existence in a metameric state.
Chemistry. isomerism resulting from the attachment of different groups to the same atom, as C2H5NHC2H5 and CH3NHC3H7.

Origin of metamerism

1840–50; (in def 1) metamere + -ism; (in def 2) meta- + (iso)merism

Example sentences from the Web for metamerism

British Dictionary definitions for metamerism

metamerism
/ (mɪˈtæməˌrɪzəm) /

noun

Also called: metameric segmentation, segmentation the division of an animal into similar segments (metameres). In many vertebrates it is confined to the embryonic nervous and muscular systems
chem a type of isomerism in which molecular structures differ by the attachment of different groups to the same atom, as in CH 3 OC 3 H 7 and C 2 H 5 OC 2 H 5

Medical definitions for metamerism

metamerism
[ mə-tămə-rĭz′əm ]

n.

The condition of having the body divided into metameres, exhibited in most animals only in the early embryonic stages of development.