atrial artery atrial • atrial auricle · · · Info · Definitions · Characters · · atrial artery · · Text Common · · Latin · · Scripts 13 · · Length 5 · · Syllables Definitions · · · (noun) the branch of the coronary artery that supplies the muscles of the atria. Synonyms: atrial artery. · · Noun Definition 1 Characters · · space U+0020 a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 l latin small letter l U+006C r latin small letter r U+0072 t latin small letter t U+0074 y latin small letter y U+0079