Origin of combustMiddle English from Classical Latin combustus, past participle of comburere, to burn up: see combustion
verbcom·bust·ed, com·bust·ing, com·busts
- a. To catch fire; burst into flame: The fire started when a pile of oily rags spontaneously combusted.b. To undergo combustion; burn: As the fuels were combusting they gave off noxious vapors.
- To become suddenly angry or agitated: The defendant combusted when he heard the verdict.
- To cause to burn; ignite.
- To cause to become angry or violent: riots that are combusting whole provinces.
Origin of combustBack-formation from combustion
(third-person singular simple present combusts, present participle combusting, simple past and past participle combusted)
(comparative more combust, superlative most combust)
From Old French combust, from Latin combūstus.