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ecosphere
écossaise
ecosystem
ecoterrorism
ecotone
ecotourism
ecotoxic
ecotoxicology
ecotricity
ecotype
ecowarrior
ECOWAS
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ectomere

ec·to·mere [ éktə mr ] (plural ec·to·meres)


noun 
Definition:
 
cell in embryo development: a cell blastomere produced during the division of a fertilized egg that develops with others into the outer cell layer ectoderm of an embryo

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