decidua basalis

noun
decidua ba·​sa·​lis | \ -bə-ˈsā-ləs How to pronounce decidua basalis (audio) \
variants: also decidua serotina \ -​ˌser-​ə-​ˈtē-​nə, -​ˈtī-​ How to pronounce decidua serotina (audio) \

Medical Definition of decidua basalis

: the part of the endometrium in the pregnant human female that participates with the chorion in the formation of the placenta

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one from the Upper Peninsula of Michigan

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