That which undergoes burning.
start to burn or burst into flames
"Marsh gases ignited suddenly"
"The oily rags combusted spontaneously"
get very angry and fly into a rage
"The professor combusted when the student didn't know the answer to a very elementary question"
"Spam makes me go ballistic"
cause to become violent or angry
"Riots combusted Pakistan after the U.S. air attacks on Afghanistan"
To burn; to catch fire.
Burnt.