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

met′a·mer′ic (-mĕr′ĭk, -mîr′-) adj.
met′a·mer′i·cal·ly adv.


(Zoology) one of the similar body segments into which earthworms, crayfish, and similar animals are divided longitudinally. Also called: somite
[C19: from meta- + -mere]
metameral adj


(ˈsoʊ maɪt)

1. any of the longitudinal series of segments or parts into which the body of certain animals is divided; a metamere.
2. one of the thickened segments of tissue that occur in pairs along the back of the vertebrate embryo.
[1865–70; < Greek sôm(a) body]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.metamere - one of a series of similar body segments into which some animals are divided longitudinallymetamere - one of a series of similar body segments into which some animals are divided longitudinally
segment - one of the parts into which something naturally divides; "a segment of an orange"
References in periodicals archive ?
5-1 ml per metamere to be covered in function of the stage of labor.
The insertion of the catheter at the subdural level leads to the spread of the anesthetic to the subarachnoid space, leading to a sensory block that affects the more cephalic metameres for the volume and concentration used with a variable motor effect and even cardiorespiratory arrest.
As mentioned, for some of our experiments, earthworms had their suprapharyngeal ganglia removed, which is accomplished by using a razor blade to cut a single midline incision into the dorsal surface from the earthworm's first metamere to its fourth metamere.