Hypoblast
Pronunciation : Hy"po*blast
Part of Speech : n.
Etymology : [Pref. hypo- + -blast.] (Biol.)
Definition : Defn: The inner or lower layer of the blastoderm; -- called also endoderm, entoderm, and sometimes hypoderm. See Illust. of Blastoderm, Delamination, and Ectoderm.
Source : Webster's Unabridged Dictionary, 1913