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.
That includes fixing the thruster issues from the first crewed spaceflight and conducting more propulsion system testing. Eric Lagatta, USA Today, 6 June 2025 Since 2004, Voyager 1 has been using its backup thrusters after the primary system failed. Scott Neuman, NPR, 20 May 2025 Within 20 minutes of receiving the signal, the team saw the thruster heaters' temperature soar — a clear sign that the backup thrusters were firing as planned. Victoria Corless, Space.com, 15 May 2025 Each electric thruster on Psyche generates just 250 milli-newtons of thrust, roughly equivalent to the weight of three quarters. ArsTechnica, 1 May 2025 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

Browse Nearby Words

Cite this Entry

“Thruster.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/thruster. Accessed 18 Jun. 2025.

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

More from Merriam-Webster on thruster

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!