noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A primitive alimentary cavity
2. 2
   central cavity of the gastrula; becomes the intestinal or digestive cavity wordnet

Etymology

arch- from Latin archi- from Ancient Greek ἀρχι- (arkhi-) + enteron from Ancient Greek ἔντερον (énteron, “gut”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.