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
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blastosphere::noun | Spocien Dictionary
| Type | Words |
|---|---|
| Synonyms | blastula |
| Type of | conceptus, embryo, fertilized egg |
| Has types | blastodermic vessicle, blastocyst |
| Derivation | blastospheric |
