ectomere


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ec·to·mere

 (ĕk′tə-mîr′)
n.
Any of the blastomeres from which the ectoderm develops.

ec′to·mer′ic (-mîr′ĭk, -mĕr′-) adj.

ectomere

(ˈɛktəʊˌmɪə)
n
(Physiology) embryol any of the blastomeres that later develop into ectoderm
ectomeric adj