imuran imu • in · · · Info · Definitions · Synonyms · Characters · · imuran · · Text Latin · · Script 6 · · Length 3 · · Syllables Definitions · · · (noun) an immunosuppressive drug (trade name Imuran) used to prevent rejection of a transplanted organ. Synonyms: azathioprine, Imuran. · · Noun Definition 1 Synonyms · · · azathioprine · · Synonym 1 Characters · · a latin small letter a U+0061 i latin small letter i U+0069 m latin small letter m U+006D n latin small letter n U+006E r latin small letter r U+0072 u latin small letter u U+0075