service module

noun

: a space vehicle module that contains oxygen, water, fuel cells, propellant tanks, and the main rocket engine

Examples of service module 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 two spacewalkers installed a solar radiation experiment on the exterior of the Zvezda service module and removed science hardware from the Poisk and Nauka modules on the station's Russian segment. Robert Z. Pearlman, Space.com, 27 May 2026 With low-Earth orbit that could be more in the 200-500 miles altitude range, NASA will just rely on the service module for all the propulsion needed once the SLS sends Orion into space after launch. Richard Tribou, The Orlando Sentinel, 14 May 2026 Then, sometime this summer, ground teams at Kennedy will connect the Orion crew module to the ship’s service module before preparing the spacecraft for fueling. Stephen Clark, ArsTechnica, 28 Apr. 2026 While there were no major concerns for this mission, Kshatriya said the service module will need to be fixed for future flights. Jackie Wattles, CNN Money, 11 Apr. 2026 See All Example Sentences for service module

Word History

First Known Use

1961, in the meaning defined above

Time Traveler
The first known use of service module was in 1961

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Cite this Entry

“Service module.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/service%20module. Accessed 4 Jun. 2026.

Kids Definition

service module

noun
: a part of a space vehicle containing oxygen, water, fuel cells, fuel tanks, and the main rocket engine
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