Definitions

1. adverb

capable of or tending to ignite or burn easily

“The fireworks combustibly responded to the sparkler, bursting into colorful explosions.”

2. adverb

tending to cause combustion or fire

“The highly combustibly material was stored safely away from any open flames.”

3. noun

a combustible substance or mixture

“The researchers studied the properties of various combustibles to better understand their combustion behaviors.”