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 image appears to show the bottom of Orion's service module where its main engine and auxiliary thrusters are housed. Eric Lagatta, USA Today, 2 Apr. 2026 In other words, if there are major problems with Orion's navigation or propulsion system after heading for the moon, the capsule will still make its way back to Earth without any help from its thrusters. William Harwood, CBS News, 30 Mar. 2026 The goal is to design, manufacture, and test a prototype thruster capable of stable operation with Earth’s atmospheric gases (N₂/O₂ mixtures), achieving at least 50% electrical efficiency and a minimum specific impulse of 4200 s. Prabhat Ranjan Mishra, Interesting Engineering, 27 Mar. 2026 Armstrong made a calculated decision, deploying the craft's thrusters to stop the spinning. Arkansas Online, 22 Mar. 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 5 Apr. 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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