pyromancy

noun

py·​ro·​man·​cy ˈpī-rə-ˌman(t)-sē 

: divination by means of fire or flames

Word History

Etymology

Middle English piromancie, from Middle French, from Late Latin pyromantia, from Greek pyromanteia, from pyr fire + manteia divination — more at -mancy

First Known Use

14th century, in the meaning defined above