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The condition of having the body divided into metameres, apparent in certain animals only in the early embryonic stages of development.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
1. (Zoology) Also called: metameric segmentation or segmentation the division of an animal into similar segments (metameres). In many vertebrates it is confined to the embryonic nervous and muscular systems
2. (Chemistry) 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 and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
me•tam•er•ism(məˈtæm əˌrɪz əm)
1. the body plan of animals in which the basic structure is a series of linear segments or somites.
2. isomerism resulting from the attachment of different groups to the same atom, as C2H5NHC2H5 and CH3NHC3H7.
met•a•mer•ic (ˌmɛt əˈmɛr ɪk) adj.
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