metamere

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of the homologous segments that compose the bodies of certain animals; a somite.

from The Century Dictionary.

• noun In zoology, one of a longitudinal series of parts which are serially homologous with one another. See metameric, metamerism.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Biol.) One of successive or homodynamous parts in animals and plants; one of a series of similar parts that follow one another in a vertebrate or articulate animal, as in an earthworm; a segment; a somite. See Illust. of loeven's larva.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun biology One of successive or homodynamous parts in animals and plants; one of a series of similar parts that follow one another in a vertebrate or articulate animal, as in an earthworm; a segment or somite.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun one of a series of similar body segments into which some animals are divided longitudinally