The cavity or chamber formed during the gastrula stage of embryonic development; the primitive digestive cavity.
From Greek 'gaster' (stomach) + Latin '-eum' (neuter singular ending). Technical anatomical term from 19th-century embryology.
The gastraeum is literally the first stomach your embryo makes—everything else in your body's plumbing connects from that one primordial pouch!
Complete word intelligence in one call. Free tier — 50 lookups/day.