metamere

met·a·mere   (mět'ə-mîr')    n.  Any of the homologous segments, lying in a longitudinal series, that compose the body of certain animals, such as earthworms and lobsters. Also called somite. met'a·mer'ic (-měr'ĭk, -mîr'-) adj., met'a·mer'i·cal·ly adv.

Main Entry: meta·mere
Pronunciation: 'met-&-"mi(&)r
Function: noun
: any of a linear series of primitively similar segments into which thebody of a higher invertebrate or vertebrate is divisible and which are usually clearly distinguishable in the embryo, identifiable in somewhat modified form in various invertebrates (as annelid worms),and detectable in the adult higher vertebrate only in specialized segmentally arranged structures (as cranial and spinal nerves or vertebrae) : SOMITE

metamere met·a·mere (mět'ə-mēr')
n.
Any of the homologous segments, lying in a longitudinal series, that compose the body of certain animals, such as lobsters. Also called somite.

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met'a·mer'ic (-měr'ĭk) adj.