Found 2 items, similar to blastula.
English → English (WordNet) Definition: blastula blastula n : early stage of an embryo produced by cleavage of an ovum; a liquid-filled sphere whose wall is composed of a single layer of cells; during this stage (about eight days after fertilization) implantation in the wall of the uterus occurs [syn: blastodermic vesicle] [also: blastulae (pl)]
English → English (gcide) Definition: Blastula Blastula \Blas"tu*la\, n. [NL., dim. of Gr. blasto`s a sprout.] (Biol.) That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm. [1913 Webster]