PYREXIA Meaning of PYREXIA in English [ pʌɪ'rɛksɪə , pɪ- ]■ noun Medicine fever.Derivatives~l adjectivepyrexic adjective OriginC18: mod. L., from Gk purexis , from puressein 'be feverish'. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004