embryonic disk

noun

Definition of EMBRYONIC DISK

a : blastodisc

: the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops —called also embryonic shield

circa 1938

Medical Dictionary

noun

: the part of the inner cell mass of a blastocyst from which the embryo of a placental mammal develops—called also embryonic shield

embryonic disk or embryonic disc

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