The inner germ layer that develops into the lining of the digestive and respiratory systems

• Germ layer

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Hypoblast \Hy"po*blast\, n. [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 .

WordNet Word definitions in WordNet
n. the inner germ layer that develops into the lining of the digestive and respiratory systems [syn: entoderm , endoblast , entoblast , hypoblast ]

Wikipedia Word definitions in Wikipedia
Endoderm is one of the three primary germ layers in the very early human embryo . The other two layers are the ectoderm (outside layer) and mesoderm (middle layer), with the endoderm being the innermost layer. Cells migrating inward along the archenteron ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1835, from endo- + -derm . Coined by Prussian embryologist Robert Remak (1815-1865).\n

Wiktionary Word definitions in Wiktionary
n. One of the three tissue layers in the embryo of a metazoan animal. Through development, it will produce the digestive system of the adult.