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propellant

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Etymology and origin of the English word propellant

Confidence
Established
Formation
Borrowing, Derivation
First attested
1644 J. Bulwer, Chirologia More words from the 17th century
Borrowed from
Latin propellens
Ultimate origin
Latin pellō
Etymology tree
inherited borrowed derived
Latin pellō
Latin prōpellō
English propel
English propellant
From the same root
English repulsive ← pellō
Latin appellō ← pellō
Latin compellō ← pellō
Latin dēpellō ← pellō
Latin dispellō ← pellō
Latin expellō ← pellō
Latin impellō ← pellō
Latin interpellō ← pellō
Latin perpellō ← pellō
Latin pulsō ← pellō
Latin pulsus ← pellō
Latin pultō ← pellō
Latin repellō ← pellō
English propeller ← prōpellō
Latin prōpulsō ← prōpellō

Pronunciation

  • /prəˈpelənt/[1]

Etymology

It was first written propellent, borrowed from Latin prōpellēns (“driving forward”), the present participle of prōpellō (“to drive forth or onward”),[2][3][4][5] which is formed from prō- (“forward”) and pellō (“to drive”),[2][5] according to Watkins from Proto-Indo-European *pel- (“to thrust, strike, drive”).[5] The modern spelling is formed from English propel + -ant.[6][7][3]

Earliest recorded meaning

Driving or pushing forward, as an adjective: 1644, in J. Bulwer's Chirologia.[2][6][5]

Semantic evolution

The word was first an adjective, and the noun, an agent that propels something, was at first used only in isolation: the OED quotes W. Charleton in 1654,[2][6] and Etymonline and the Shorter Oxford date its regular use from the early 19th century.[5][4] It could also be figurative, for an incentive.[4][6] Later uses followed technology: an explosive for firearms by 1881,[5] the fuel of a rocket in 1919, in R. H. Goddard's contribution to the Smithsonian Miscellaneous Collections,[2][5] and the compressed gas of an aerosol can in 1945.[2]

Timeline

  • 1644 – adjective, driving or pushing forward.[2][6]
  • 1654 – noun, an agent that propels something.[2][6] Etymonline dates the noun to 1814.[5]
  • 1881 – an explosive for firearms.[5]
  • 1919 – a substance burned in a rocket engine.[2][5]
  • 1945 – the compressed fluid in an aerosol container.[2]

Meanings

Noun

  1. Something that propels or drives forward, especially the explosive charge of a gun.[8][6][2]
  2. The fuel and oxidizer that provide the thrust of a rocket.[6][8][2]
  3. The compressed gas that drives the contents out of an aerosol container.[8][6][2]
  4. A driving force or stimulus.[6][4]

Adjective

  1. Able to propel, or used for propelling: propellant gases.[6][8][2]

Word family

  • monopropellant
  • bipropellant

Usage notes

The OED's first edition labelled the spelling propellant "erroneous" in 1908, and some usage guides, especially British ones, advise propellant for the noun and propellent for the adjective.[2] The form in -ant is now by far the most frequent for both, in British and in American usage.[2]

References

  1. ^ Wiktionary, the free dictionary, https://en.wiktionary.org
  2. ^ a b c d e f g h i j k l m n o p Oxford English Dictionary Online (accessed March 2026), Oxford: Oxford University Press
  3. ^ a b Stevenson, Angus, ed. (2010), Oxford Dictionary of English, 3rd ed., Oxford: Oxford University Press
  4. ^ a b c d Shorter Oxford English Dictionary on Historical Principles (2002), 5th ed., ed. William R. Trumble and Angus Stevenson, Oxford: Oxford University Press
  5. ^ a b c d e f g h i j Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
  6. ^ a b c d e f g h i j k Merriam-Webster Unabridged Dictionary (2024), online ed., Springfield, Mass.: Merriam-Webster
  7. ^ Dictionary.com Unabridged (2016), based on the Random House Unabridged Dictionary, New York: Random House
  8. ^ a b c d Collins English Dictionary (2023), Glasgow: HarperCollins

Related etymologies

Cite this entry

“Propellant.” Etymologically, 6 Nov. 2026, etymologically.com/en/propellant. Accessed 7 Nov. 2026.

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