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

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It’s also used to monitor the jugular vein, which is prone to clots due to microgravity, as well as other bodily systems. Alex Knapp, Forbes.com, 29 Jan. 2026 Throughout its lifespan, the station has served as a test bed for scientific research in microgravity and has in years past opened itself up to private commercial missions. Eric Lagatta, USA Today, 27 Jan. 2026 Unlike terrestrial settings, space missions expose machines to vacuum conditions, microgravity, extreme temperature swings, and high levels of radiation, pushing robotic systems far beyond conventional operating limits, reports CNEVPost. Jijo Malayil, Interesting Engineering, 27 Jan. 2026 The two also conducted an ocular examination on one of Cardman's eyes, to assess how her retina, cornea, and lens have been affected by microgravity. Josh Dinner, Space.com, 15 Jan. 2026 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 3 Feb. 2026.

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

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