ignescent/ɪɡˈnɛsənt/EtymologyLatin ignescens, present participle of ignescere (“to become inflamed”), from ignis (“fire”): compare French ignescent. By surface analysis, Latin ign- + -escent.adjEmitting sparks of fire when struck with steel; scintillating.“ignescent stones”nounA stone that emits sparks of fire when struck with steel.