(n) :
Alternative form of blastodisk. [(biology) A round, flattened region of cells from which the embryo of many vertebrates begins to develop in the fertilized ovum; a germinal disk]
(n) :
Alternative form of blastodisk. [(biology) A round, flattened region of cells from which the embryo of many vertebrates begins to develop in the fertilized ovum; a germinal disk]