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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At issue were persistent cracks in a small area of the International Space Station attached to the Russian Zvezda service module, known as the PrK module. Eric Berger, ArsTechnica, 15 June 2026 The service module, built by the European Space Agency (ESA), is based on the Automated Transfer Vehicle, an uncrewed spacecraft that supplied the International Space Station (ISS). Encyclopedia Britannica, 9 June 2026 This has been a persistent, ongoing leak caused by cracks in the PrK transfer tunnel which connects to the Russian Zvezda service module. Chelsea Gohd, Space.com, 9 June 2026 The agency noticed a slow pressure drop in the Zvezda service module transfer tunnel, known as PrK, in May after a Russian cargo ship arrived at the ISS, according to CBS News. Abigail Adams, PEOPLE, 5 June 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 21 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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