What is "blastodisc"

blastodisc \blastodisc\ n. 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.

Syn: germinal disc, germinal area.

n. (alternative form of blastodisk English)

n. a layer of cells on the inside of the blastula [syn: blastoderm, germinal disc, germinal area]