metamerism

metamerism

[muh-tam-uh-riz-uhm]
noun
1.
Zoology.
a.
division into metameres, the developmental process of somite formation.
b.
existence in a metameric state.
2.
Chemistry. isomerism resulting from the attachment of different groups to the same atom, as C 2 H 5 NHC 2 H 5 and CH 3 NHC 3 H 7 .

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

Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
Cite This Source Link To metamerism
Collins
World English Dictionary
metamerism (mɪˈtæməˌrɪzəm)
 
n
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

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
Cite This Source
American Heritage
Medical Dictionary

metamerism me·tam·er·ism (mə-tām'ə-rĭz'əm)
n.
The condition of having the body divided into metameres, exhibited in most animals only in the early embryonic stages of development.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Cite This Source
Copyright © 2014 Dictionary.com, LLC. All rights reserved.
  • Please Login or Sign Up to use the Recent Searches feature