thruster

noun

thrust·​er ˈthrə-stər How to pronounce thruster (audio)
variants or less commonly thrustor
: one that thrusts
especially : an engine (such as a jet engine) that develops thrust by expelling a jet of fluid or a stream of particles

Examples of thruster in a Sentence

Recent Examples on the Web
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Its first and second uncrewed orbital tests, in 2019 and 2022, each revealed unexpected performance shortfalls with Starliner’s thrusters. Claire Cameron, Scientific American, 19 Feb. 2026 Starliner has been under development for more than a decade, and problems with the vehicle’s thrusters also cropped up during uncrewed test flights flown prior to NASA’s inaugural Boeing Crew Flight Test in 2024, which included NASA astronauts Suni Williams and Butch Wilmore. Jackie Wattles, CNN Money, 19 Feb. 2026 This stored energy powers its thrusters, computers, sensors, and subsystems. Sujita Sinha, Interesting Engineering, 10 Feb. 2026 Using such an arrangement, Lockheed Martin claims that the Lamprey can reach its mission area with its batteries 100% charged to run the craft's quad-thruster propulsion system, autonomous onboard computers, sensors, and subsystems. David Szondy february 09, New Atlas, 9 Feb. 2026 See All Example Sentences for thruster

Word History

First Known Use

1597, in the meaning defined above

Time Traveler
The first known use of thruster was in 1597

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Cite this Entry

“Thruster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thruster. Accessed 20 Feb. 2026.

Kids Definition

thruster

noun
thrust·​er ˈthrəs-tər How to pronounce thruster (audio)
: one that thrusts
especially : an engine that produces thrust by discharging a jet of fluid or a stream of particles

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