English dictionary

blastula

/'bl/&/s/tS//U/l/@/

Definitions, examples, synonyms and antonyms from WordNet 3.0.

noun

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

noun.animal

Synonyms blastosphere

Source: WordNet 3.0
That stage in the development of the ovum in which the outer cells of the morula become more defined and form the blastoderm.

noun

Source: webster1913