archenteron

English Thesaurus

1. central cavity of the gastrula; becomes the intestinal or digestive cavity (noun.animal)

hypernym	:	bodily cavity, cavity, cavum,
definition	:	(anatomy) a natural hollow or sinus within the body (noun.body)

part holonym	:	blastopore,
definition	:	the opening into the archenteron (noun.animal)

part meronym	:	gastrula,
definition	:	double-walled stage of the embryo resulting from invagination of the blastula; the outer layer of cells is the ectoderm and the inner layer differentiates into the mesoderm and endoderm (noun.animal)