noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   A peptide hormone, secreted by the duodenum, that serves to regulate its acidity
2. 2
   a gastrointestinal hormone that stimulates the secretion of water and bicarbonate from the pancreas and bile ducts whenever the stomach empties too much acid into the small intestine wordnet

Etymology

From secrete + -in?

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