blastodisc

n.

1.

a disc-shaped layer of cells on the surface of the yolk mass of an egg (such as that of a bird) which develops to form the embryo.

Noun

1.

blastodisc - a layer of cells on the inside of the blastula Synonyms: blastoderm, germinal area, germinal disc

blastoderm, germinal area, germinal disc, layer