- bursting into flame
- giving off sparks when struck with steel
Origin of ignescentClassical Latin ignescens, present participle of ignescere, to take fire, burn from ignis: see igneous
an ignescent substance
- Emitting sparks of fire when struck with steel; scintillating; as, ignescent stones
Latin ignescens, present participle of ignescere to become inflamed, from ignis fire: compare French ignescent.