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
Adjective
The rest of the booster, including the main airframe and propellant tanks, will still be expended. Stephen Clark, Ars Technica, 28 June 2024 SpaceX said this flight reached several more milestones, including the first reentry from space, first opening and closing of the craft's payload door in space and a successful propellant transfer demonstration. Eric Lagatta, USA TODAY, 6 June 2024
Noun
Leading up to the explosion, engineers swapped out the engine's initial combustion chamber for another one with improvements to better withstand the super-hot gas generated when kerosene and liquid oxygen propellants mix and ignite. Stephen Clark, Ars Technica, 2 July 2024 Shortly after separating from the United Launch Alliance's Vulcan rocket, Peregrine's propulsion began leaking a critical amount of propellant that forced Astrobotic to eventually abandon plans of landing on the moon. Eric Lagatta, USA TODAY, 25 June 2024 See all Example Sentences for propellant 

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'propellant.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

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 15 Jul. 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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