Definitions

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A hollow blastula, supposed to be the primitive form.

from the GNU version of the Collaborative International Dictionary of English

  • n. A hollow blastula, supposed to be the primitive form; a cœloblastula.

from The Century Dictionary and Cyclopedia

  • n. In embryology, a hollow and usually globular vesicle, the walls of which consist of a single layer of similar cells, and which by invagination develops an archigastrula.

Etymologies

archi- +‎ blastula (Wiktionary)

Examples

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