| 1. | Also called endoblast. Embryology. the innermost cell layer of the embryo in its gastrula stage. |
| 2. | Anatomy. the innermost body tissue that derives from this layer, as the gut lining. |
endoblast en·do·blast (ěn'də-blāst')
n.
Variant of entoblast.
endoderm en·do·derm (ěn'də-dûrm') or en·to·derm (ěn'tə-)
n.
The innermost of the three primary germ layers of an embryo, developing into the gastrointestinal tract, the lungs, and associated structures. Also called hypoblast.