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embryonic membrane

   Also found in: Medical, Encyclopedia, Wikipedia 0.40 sec.
embryonic membrane
n.
Any of the membranous structures closely associated with or surrounding a developing vertebrate embryo, including the amnion, chorion, allantois, and yolk sac.
ThesaurusLegend:  Synonyms Related Words Antonyms
Noun1.embryonic membraneembryonic membrane - the inner membrane of embryos in higher vertebrates (especially when covering the head at birth)
fetal membrane - any membrane that functions for the protection or nourishment or respiration or excretion of a developing fetus
placenta - the vascular structure in the uterus of most mammals providing oxygen and nutrients for and transferring wastes from the developing fetus


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The embryonic membrane market calls for a range of cost-performance and leaves room for numerous options, says Charles Stone, advanced materials v.
Stage 2: gastrulation, cellular organization, and differentiation are evident; first embryonic membrane is ruptured as the embryo becomes asymmetrical; blastopore can be discerned
 
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