sphincter ani sphincteralgia • sphincterate · · · Info · Definitions · Synonyms · Characters · · sphincter ani · · Text Common · · Latin · · Scripts 13 · · Length 4 · · Syllables Definitions · · · (noun) the sphincter muscle of the anus. Synonyms: anal sphincter, sphincter ani, musculus sphincter ani. · · Noun Definition 1 Synonyms · · · anal sphincter · · Synonym 1 musculus sphincter ani · · 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 h latin small letter h U+0068 i latin small letter i U+0069 n latin small letter n U+006E 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