Pyretology is the study of fever and its causes. There are several synonyms for the term pyretology. The first one is febrile medicine, which refers to the branch of medicine that deals with fever. Another synonym for pyretology is pyrexology, which is the study of fever and high body temperatures. The third synonym for pyretology is febriology, which also refers to the study of fever. Lastly, there is the term febrifuge, which is a substance that reduces fever, often used as a synonym for pyretology in the context of medicine. These synonyms are useful when talking about pyretology in different contexts or with different audiences.