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 reusable rocket carries people on a ride past the edge of space, with the spacecraft and crew floating in microgravity for a couple of minutes before returning to Earth. Annie Palmer, CNBC, 27 Feb. 2025 Research and technology development in microgravity In the 24 years that the ISS has been in orbit, there have been more than 4,000 experiments conducted, according to NASA. Mary Kekatos, ABC News, 22 Feb. 2025 Latent herpes infections often get reactivated; certain medications can become less effective; microgravity, the technical term for near-weightlessness, redistributes blood to veins in the head and neck that aren’t used to handling the flow, increasing the risk of clots. Dhruv Khullar, The New Yorker, 10 Feb. 2025 But more recent studies have suggested that chronic oxidative stress—and not microgravity—likely cause telomeres to lengthen in space. Regina Kim, Forbes, 15 Jan. 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 3 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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