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
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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 During re-entry, the capsule shed its service module and dived toward Earth at 24,000 miles per hour. Glenn Garner, Deadline, 10 Apr. 2026 The service module, which propelled the crew through their journey to the moon and back again, will separate from the crew module where the crew sits. Chelsea Gohd, Space.com, 10 Apr. 2026 Crew returning to Earth Orion's service module has the ability to fire, or burn, its engine up to three times to refine the trajectory and ensure the crew is set up for a safe splashdown. Eric Lagatta, USA Today, 10 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 17 Apr. 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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