- To burn; to catch fire.
- (intransitive, figuratively) To erupt with enthusiasm or boisterousness.
2012, Oliver Burkeman, The Antidote, Happiness for People who Can't Stand Positive Thinking, ↑ISBN:
- The audience combusts.
be consumed by fire — see burn
- (obsolete) Burnt.
- (astrology) In close conjunction with the sun (so that its astrological influence is "burnt up"), sometimes specified to be within 8 degrees 30'.
1621, Democritus Junior [pseudonym; Robert Burton], The Anatomy of Melancholy, Oxford: Printed by Iohn Lichfield and Iames Short, for Henry Cripps, OCLC 216894069; The Anatomy of Melancholy, 2nd corrected and augmented edition, Oxford: Printed by John Lichfield and James Short, for Henry Cripps, 1624, OCLC 54573970, (please specify |partition=1, 2, or 3):, I.iii.1.3:
- Guianerius had a patient could make Latin verses when the moon was combust, otherwise illiterate.
1644, John Milton, Aeropagitica:
- Who can discern those planets that are oft Combust, and those stars of brightest magnitude that rise and set with the Sun, untill the opposite motion of their orbs bring them to such a place in the firmament, where they may be seen evning or morning.