portal system portal site • portal tomb · · · Info · Definitions · Characters · · portal system · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) system of veins that carry blood from the abdominal organs to the liver. Synonyms: portal system. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 l latin small letter l U+006C m latin small letter m U+006D o latin small letter o U+006F p latin small letter p U+0070 r latin small letter r U+0072 s latin small letter s U+0073 t latin small letter t U+0074 y latin small letter y U+0079