CACHEXIA Meaning of CACHEXIA in English [ kə'kɛksɪə ]■ noun Medicine weakness and wasting of the body due to severe chronic illness.OriginC16: via late L. from Gk kakhexia , from kakos 'bad' + hexis 'habit'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004