Definify.com
Webster 1913 Edition
Hypoblast
Hy′po-blast
,Noun.
[Pref.
hypo-
+ -blast
.] (Biol.)
The inner or lower layer of the blastoderm; – called also
endoderm
, entoderm
, and sometimes hypoderm
. See Illust. of Blastoderm
, Delamination
, and Ectoderm
.