decidua basalis
noun
decidua ba·sa·lis
-bə-ˈsal-əs, -ˈsā-ləs 
variants
also decidua serotina
: the part of the endometrium in the pregnant human female that participates with the chorion in the formation of the placenta
Cite this Entry
“Decidua basalis.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/decidua%20basalis. Accessed 3 Nov. 2025.
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