pyretology

from The Collaborative International Dictionary of English v.0.48

Pyretology \Pyr`e*tol"o*gy\, n. [Gr. ? fever + -logy: cf. F.
   pyr['e]tologie.] (Med.)
   A discourse or treatise on fevers; the doctrine of fevers.
   --Hooper.
   [1913 Webster]