embryonic disk
noun Embryology.
Also called embryonic shield.
in the early embryo of mammals, the flattened inner cell mass that arises at the end of the blastocyst stage and from which the embryo begins to differentiate.
the blastodisk of yolky eggs.
Origin of embryonic disk
First recorded in 1935–40
Words nearby embryonic disk
Medical definitions for embryonic disk
embryonic disk
n.
A platelike mass of cells in the blastocyst from which a mammalian embryo develops.
embryonic shield
germinal disk