combustion

Etymology

It is inherited from Middle English combustioun,^[2] borrowed from Old French combustion,^[3][4][5][6] and directly borrowed from Late Latin combustiō (“a burning”),^[4][7][8][6] a noun of action from combustus, the past participle of combūrō (“to burn up, consume”).^[4][7][6][9] The Latin verb is formed from com-, here intensive, and *būrere, from a faulty division of ambūrō (“to burn around, scorch”), which is properly ambi- and ūrō (“to burn, singe”).^{[4][7][5][10]} Etymonline and Barnhart trace the simple verb to Proto-Indo-European *h₁ews- (“to burn”), and relate it to ember;^[4][5] Barnhart also relates broil and bust, the sculpture.^[5]

Earliest recorded meaning

In astrology, the obscuring of the moon or a planet by nearness to the sun: before 1398, in Trevisa's translation of Bartholomew's “De Proprietatibus Rerum”.^[2][5] The sense "burning" follows in the surgical translation of Chauliac, probably before 1425, where it is a burn and also calcination.^[2][5]

Semantic evolution

In the medical texts of the 15th and 16th centuries the word meant a burn or an inflammation, uses now obsolete.^[2][3] The astrological sense lasted until the 18th century.^[3] The everyday sense, consumption or destruction by fire, the OED records from before 1600 in Hooker,^[3] and it notes that the word is not common outside science.^[3] In chemistry it became the ordinary term for burning, and since 1800 it has also been applied to slow oxidation without flame, as in the body.^[3][11] A figurative sense, violent excitement, commotion or tumult, is recorded from 1589 and was, the OED says, exceedingly common in the 17th and 18th centuries;^[3] Johnson (1755) gave "tumult; hurry; hubbub; bustle; hurly burly" as its second sense.^[12]

Timeline

• before 1398 – astrology, obscuring of a planet by the sun.^[2][5]
• before 1425 – calcination; a burn.^[2][5]
• 1589 – commotion, tumult.^[3]
• before 1600 – burning, consumption by fire.^[3]
• 1695 – the testing of coin by melting.^[3]
• 1800 – slow oxidation without flame.^[3]
• 1863 – complete burning of a substance in a combustion tube, in chemical analysis.^[3]

Meanings

Noun

1. The act or process of burning.^[13][11][14]
2. (chemistry) A chemical reaction, usually with oxygen, that gives off heat and light; also, slower oxidation, as in the body.^[13][11][14]
3. (archaic) Violent excitement; tumult or commotion.^[3][12][11]

Word family

• combustive
• noncombustion
• precombustion
• combustion chamber
• combustion engine
• internal combustion engine
• spontaneous combustion

Related words

• combust
• combustible
• combustor
• ember
• bust

References

1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
2. ^ a b c d e f Kurath, Hans; Kuhn, Sherman M.; Lewis, Robert E., eds. (1952–2001), Middle English Dictionary, Ann Arbor: University of Michigan Press; online edition ed. Frances McSparran et al. (2000–2018)
3. ^ a b c d e f g h i j k l m Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
4. ^ a b c d e Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
5. ^ a b c d e f g h Barnhart, Robert K. (1988), The Barnhart Dictionary of Etymology
6. ^ a b c Hoad, T. F., ed. (1986), The Concise Oxford Dictionary of English Etymology, Oxford: Clarendon Press
7. ^ a b c The American Heritage Dictionary of the English Language (online 2024), 5th ed., Boston: Houghton Mifflin Harcourt
8. ^ Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
9. ^ Klein, Ernest. A Comprehensive Etymological Dictionary of the English Language. 2 vols. Amsterdam: Elsevier, 1966–1967.
10. ^ Skeat, Walter W. (1911), A Concise Etymological Dictionary of the English Language, new ed., Oxford: Clarendon Press
11. ^ a b c d Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
12. ^ a b Johnson, Samuel (1755), A Dictionary of the English Language, London; 4th ed. 1773; Johnson's Dictionary Online, ed. Beth Rapp Young et al.
13. ^ a b Collins English Dictionary (2023), Glasgow: HarperCollins
14. ^ a b Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press