n. A type of tissue that forms from the inner cell mass and later is incorporated into the endoderm
the GNU version of the Collaborative International Dictionary of English
n. The inner or lower layer of the blastoderm; -- called also endoderm, entoderm, and sometimes hypoderm. See Illust. of blastoderm, delamination, and ectoderm.
The Century Dictionary and Cyclopedia
n. In botany, the flat dorsal cotyledon of a grass.
n. In biology, the internal or inferior layer of cells of the embryo of metazoic animals, forming the endoderm or innermost membrane: the opposite of epiblast: correlated with mesoblast.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. the inner germ layer that develops into the lining of the digestive and respiratory systems
Word Usage
"The hypoblast is the lining of the intestine and of the glands which open into it; and the material of the notochord is also regarded, as hypoblast."