syncytiotrophoblast

noun
syn·​cy·​tio·​tro·​pho·​blast | \ sin-ˌsish-ē-ō-ˈtrō-fə-ˌblast How to pronounce syncytiotrophoblast (audio) \

Medical Definition of syncytiotrophoblast

: the outer syncytial layer of the trophoblast that actively invades the uterine wall forming the outermost fetal component of the placenta

called also syntrophoblast

— compare cytotrophoblast

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