propellant

1 of 2

adjective

pro·​pel·​lant prə-ˈpe-lənt How to pronounce propellant (audio)
variants or less commonly propellent
: capable of propelling

propellant

2 of 2

noun

variants or less commonly propellent
: something that propels: such as
a
: an explosive for propelling projectiles
b
: fuel plus oxidizer used by a rocket engine
c
: a gas kept under pressure in a bottle or can for expelling the contents when the pressure is released

Examples of propellant in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
Adjective
The uncrewed Progress capsule — which can carry science experiments, propellant, food and other supplies to the ISS — runs on a fuel called unsymmetric-dimethylhydrazine and an oxidizer called nitrogen tetroxide. Jackie Wattles, CNN, 25 Nov. 2024 Lee Choon Geun, an honorary research fellow at South Korea’s Science and Technology Policy Institute, said the early results of Thursday’s launch suggested Russia might have given a key propellant component that can boost a missile’s engine thrust. Hyung-Jin Kim, Los Angeles Times, 31 Oct. 2024
Noun
The second stage being used for the Hera mission will boost the space probe into deep space, using all of its propellant in the process. William Harwood, CBS News, 6 Oct. 2024 While SpaceX normally recovers first stage boosters for refurbishment and reuse, the three core stage boosters and the rocket's second stage needed all of their propellants to accelerate the Clipper to the required Earth-departure velocity. William Harwood, CBS News, 14 Oct. 2024 See all Example Sentences for propellant 

Word History

Etymology

Adjective

borrowed from Latin prōpellent-, prōpellens, present participle of prōpellere "to push or thrust forward, compel to go onward" — more at propel

Noun

in part noun derivative of propellant entry 1, in part from propel + -ant entry 1

First Known Use

Adjective

1644, in the meaning defined above

Noun

1654, in the meaning defined above

Time Traveler
The first known use of propellant was in 1644

Dictionary Entries Near propellant

Cite this Entry

“Propellant.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/propellant. Accessed 22 Dec. 2024.

Kids Definition

propellant

noun
pro·​pel·​lant
variants also propellent
prə-ˈpel-ənt
: something that propels: as
a
: fuel plus a chemical to supply oxygen used by a rocket engine
b
: a gas under pressure in a can for expelling the contents when the pressure is released
Last Updated: - Updated example sentences
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