PROPRANOLOL Meaning of PROPRANOLOL in English [ prəʊ'pranəlɒl ]■ noun Medicine a synthetic beta blocker used mainly to treat cardiac arrhythmia.Origin1960s: from pro(pyl) + pr(op)anol , with the reduplication of -ol . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004