pyrexia pyrex • pyrexial · · · Info · Definitions · Synonyms · Characters · · pyrexia · · Text Latin · · Script 7 · · Length Definitions · · · (noun) a rise in the temperature of the body; frequently a symptom of infection. Synonyms: fever, febrility, febricity, feverishness. · · Noun Definition 1 Synonyms · · · fever · · Synonym 1 febrility · · Synonym 2 febricity · · Synonym 3 feverishness · · Synonym 4 Characters · · a latin small letter a U+0061 e latin small letter e U+0065 i latin small letter i U+0069 p latin small letter p U+0070 r latin small letter r U+0072 x latin small letter x U+0078 y latin small letter y U+0079