Medical Dictionary
proamnion
noun pro·am·ni·on \-ˈam-nē-ˌän, -ən\
plural pro·am·ni·ons or -nia \-nē-ə\
Medical Definition of PROAMNION
: an area in the anterior part of the blastoderm of an early amniote embryo that is free of mesoderm
—pro·am·ni·ot·ic \-ˌam-nē-ˈät-ik\ adjective
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