noun ·Rare ·Advanced level

Definitions

Noun

1. 1
   Fever. countable, uncountable

   "The least defined pyrexiae were the continued fevers, divided mainly into typhus, enteric (typhoid) and relapsing."

2. 2
   a rise in the temperature of the body; frequently a symptom of infection wordnet
3. 3
   Trench fever. countable, uncountable

Synonyms

All synonyms

deliriumfebricityfebrilityfeverfeverfeverishness

Example

More examples

"Pyrexia is another word for fever."

Etymology

From post-classical Latin pyrexia, from Ancient Greek πυρεξία (purexía, “feverishness”), from πυρετός (puretós, “fever”).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.