The meaning of Hypoblasts and additional information.

Hypoblast(n.) The inner or lower layer of the blastoderm; -- called also endoderm, entoderm, and sometimes hypoderm. See Illust. of Blastoderm, Delamination, and Ectoderm.

Hypoblastic(a.) Relating to, or connected with, the hypoblast; as, the hypoic sac.