† pyˈrurgianObs.nonce-wd. [f.Gr. πυρο- fire, after chirurgian, chirurgeon: cf.Gr. πυροεργής working in fire.] One who treats wounds, etc. with caustic applications. 1684Bonet's Merc. Compit. i. 34 Above all things Hippocrates his Golden Rule is to be observed by our Pyrurgian.