metamerism

The internal organs are largely repeated metamerically, in correspondence with the external metamerism.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 7|Various
In the articulates the metamerism is chiefly external—an articulation of the body wall.
The Wonders of Life|Ernst Haeckel
The only other example which we have of this metamerism in the Mollusca is presented by the Chitons.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6|Various
In Chiton the renal organs are not affected by the metamerism as they are in Nautilus.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6|Various

In accordance with the metamerism of Nautilus already noticed, there are two pairs of renal organs.
Encyclopaedia Britannica, 11th Edition, Volume 5, Slice 6|Various

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

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medical definitions for metamerism

metamerism

[ mə-tăm′ə-rĭz′əm ]

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