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
These examples are automatically compiled from online sources to illustrate current usage. Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Adjective
SpaceX plans to test a method to refill Starship's propellant tanks in orbit, which would allow the vehicle to reach even greater distances in space. Margherita Bassi, Smithsonian Magazine, 15 Oct. 2024 Development of Intuitive Machines' Nova C lander took years longer than anticipated; there were setbacks such as a propellant tank failure, and money was at times tight. Eric Berger, Ars Technica, 20 Sep. 2024
Noun
The full system requires more than 10 million pounds of propellant for launch. Michael Sheetz, NBC News, 13 Oct. 2024 With no propellant in the tank, the Europa Clipper weighs about 7,145 pounds. Eric Lagatta, USA TODAY, 11 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 8 Nov. 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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