accessory hemiazygous vein accessory hemiazygos vein • accessory nerve · · · Info · Definitions · Synonyms · Characters · · accessory hemiazygous vein · · Text Common · · Latin · · Scripts 26 · · Length 11 · · Syllables Definitions · · · (noun) a vein formed by the union of the 4th to 7th posterior intercostal veins; empties into the azygos vein. Synonyms: accessory hemiazygos vein, accessory hemiazygous vein, vena hemiazygos accessoria. · · Noun Definition 1 Synonyms · · · accessory hemiazygos vein · · Synonym 1 vena hemiazygos accessoria · · Synonym 2 Characters · · space U+0020 a latin small letter a U+0061 c latin small letter c U+0063 e latin small letter e U+0065 g latin small letter g U+0067 h latin small letter h U+0068 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E o latin small letter o U+006F r latin small letter r U+0072 s latin small letter s U+0073 u latin small letter u U+0075 v latin small letter v U+0076 y latin small letter y U+0079 z latin small letter z U+007A