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.
The pair conducted spacewalks and carried out 900 hours of research in microgravity. Jackie Wattles, CNN, 22 Mar. 2025 On Earth, bodily fluids are pooled in the lower body, but in microgravity, which is what's on the International Space Station, astronauts' bodily fluids begin to move toward the upper part of the body and head. Greta Cross, USA TODAY, 18 Mar. 2025 Zoom in: One prominent effect of extended time in microgravity is muscle atrophy or weakening. Avery Lotz, Axios, 18 Mar. 2025 The fish also successfully laid eggs, marking a breakthrough in studying reproduction in microgravity. Troy Aidan Sambajon, The Christian Science Monitor, 17 Mar. 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 31 Mar. 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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