LENITIVE MEDICINE, Meaning of LENITIVE MEDICINE, in English [ 'lɛnɪtɪv ]archaic■ adjective (of a medicine) laxative. ■ noun a laxative.OriginME: from med. L. lenitivus , from lenit- , lenire 'soften'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004