Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
gastroduodenal is an adjective meaning "of or relating to the stomach and the duodenum". It carries one recorded sense.
of or relating to the stomach and the duodenum
Definitions, synonyms and semantic relations for gastroduodenal come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.