gi series gi hormones • gi tract · · · Info · Definitions · Characters · · gi series · · Text Common · · Latin · · Scripts 9 · · Length 3 · · Syllables Definitions · · · (noun) diagnostic tests of the alimentary canal; usually involves inserting a contrast medium (such as barium sulfate) and taking an X-ray. Synonyms: GI series. · · Noun Definition 1 Characters · · space U+0020 e latin small letter e U+0065 g latin small letter g U+0067 i latin small letter i U+0069 r latin small letter r U+0072 s latin small letter s U+0073