|kelə|dänik- noun
Etymology: International Scientific Vocabulary chelidonic (from Gk. chelidonion celandine + International Scientific Vocabulary -ic ) + acid; originally formed as German chelidonsäure
: a crystalline acid C 7 H 4 O 6 occurring combined in celandine sap and in white hellebore roots; 4-pyrone-2,6-dicarboxylic acid