Definitions for "Blastula"
That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.
early stage of animal development in which a single layer of cells surrounds a fluid filled cavity, forming a hollow ball
(Greek, blastos = sprout = little sprout) A stage of an animal embryo that consists of a fluid filled sphere of cells on the surface. ( More? Week 2 Notes)