<anatomy> Pertaining to or communicating with the stomach and duodenum, as a gastroduodenal fistula. ... (18 Nov 1997) ... Found on http://www.encyclo.co.uk/local/20973
Gas`tro·du'o·de'nal adjective [ Gastro- + -duodenal .] (Anat.) Pertaining to the stomach and duodenum; as, the gastroduodenal artery. Found on http://www.encyclo.co.uk/webster/G/12