The Collaborative International Dictionary of English v.0.48:
Endoblast \En"do*blast\, n. [Endo- + -blast.] (Biol.) Entoblast; endoplast. See Nucleus, [1913 Webster]WordNet (r) 3.0 (2006):
endoblast n 1: the inner germ layer that develops into the lining of the digestive and respiratory systems [syn: endoderm, entoderm, endoblast, entoblast, hypoblast]