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
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.
The people behind this fantastic new energy generator also brought us the wildly successful WTF thruster EM-drive that could supposedly directly convert electricity into a propulsive force. Stephen Clark, ArsTechnica, 15 May 2026 This involved firing the spacecraft’s thrusters for 12 hours, increasing Psyche's speed, and refining its approach to the Red Planet. Robert Lea, Space.com, 12 May 2026 The data showed that the novel thruster achieved power levels of up to 120 kilowatts — over 25 times the power of the thrusters on Psyche. New Atlas, 12 May 2026 Despite her long career in planetary science, the mission’s cold-thruster close call marked one of the most enlightening moments Elkins-Tanton has ever experienced in her work. K. R. Callaway, Scientific American, 9 May 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 21 May. 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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