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gas·tro·du·o·de·nal -.d(y)ü-ə-'dēn-əl, -d(y)u̇-'äd-ən-əl adj of, relating to, or involving both the stomach and the duodenum
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gas·tro·du·o·de·nal (gas″tro-doo″o-deґnəl) 1. pertaining to or communicating between the stomach and duodenum. 2. proceeding from the stomach to the duodenum.Medical dictionary. 2011.