microgravity

noun

mi·​cro·​grav·​i·​ty ˌmī-krə-ˈgra-və-tē How to pronounce microgravity (audio)
: a condition in space in which only minuscule forces are experienced : virtual absence of gravity
broadly : a condition of weightlessness

Examples of microgravity 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.
And the work continues off planet as well; astronauts living on the ISS exercise hard every day to stave off the bone loss and muscle wasting that long stays in microgravity induce. Mike Wall, Space.com, 3 Sep. 2025 The device’s design is well-suited for microgravity, preventing issues like pooling liquids and soapy wastewater. Mrigakshi Dixit, Interesting Engineering, 2 Sep. 2025 Radiation exposure on processors, thermal management of electronics in microgravity and the long-term maintenance of satellite constellations remain unresolved engineering challenges. Nicola Sfondrini, Forbes.com, 2 Sep. 2025 Viral Among the experiments brought aboard was MVP Cell-07, a study of vascularized liver tissue constructs in microgravity. Joe Edwards, MSNBC Newsweek, 28 Aug. 2025 See All Example Sentences for microgravity

Word History

First Known Use

1974, in the meaning defined above

Time Traveler
The first known use of microgravity was in 1974

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Cite this Entry

“Microgravity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microgravity. Accessed 8 Sep. 2025.

Kids Definition

microgravity

noun
mi·​cro·​grav·​i·​ty ˌmī-krə-ˈgrav-ət-ē How to pronounce microgravity (audio)
: the condition of being weightless or of the near absence of gravity

More from Merriam-Webster on microgravity

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