'Combust' definitions:

Definition of 'combust'

(from WordNet)
verb
Cause to burn or combust; "The sun burned off the fog"; "We combust coal and other fossil fuels" [syn: burn, combust]
verb
Start to burn or burst into flames; "Marsh gases ignited suddenly"; "The oily rags combusted spontaneously" [syn: erupt, ignite, catch fire, take fire, combust, conflagrate]
verb
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" [syn: flip one's lid, blow up, throw a fit, hit the roof, hit the ceiling, have kittens, have a fit, combust, blow one's stack, fly off the handle, flip one's wig, lose one's temper, blow a fuse, go ballistic]
verb
Cause to become violent or angry; "Riots combusted Pakistan after the U.S. air attacks on Afghanistan"
verb
Undergo combustion; "Maple wood burns well" [syn: burn, combust]

Definition of 'Combust'

From: GCIDE
  • Combust \Com*bust"\, a. [L. combustus, p. p. of comburere to burn up; com- + burere (only in comp.), of uncertain origin; cf. bustum funeral pyre, prurire to itch, pruna a live coal, Gr. pyrso`s firebrand, Skr. plush to burn.]
  • 1. Burnt; consumed. [Obs.] --Chaucer. [1913 Webster]
  • 2. (Astron.) So near the sun as to be obscured or eclipsed by his light, as the moon or planets when not more than eight degrees and a half from the sun. [Obs.] [1913 Webster]
  • Planets that are oft combust. --Milton. [1913 Webster]