Blastosphere
Pronunciation : Blas"to*sphere
Part of Speech : n.
Etymology : [Gr. sprout + E. sphere.] (Biol.)
Definition : Defn: The hollow globe or sphere formed by the arrangement of the blastomeres on the periphery of an impregnated ovum.
Note: [See Illust. of Invagination.]
Source : Webster's Unabridged Dictionary, 1913