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.
In microgravity, where objects appear to be weightless, fluids drift upward toward the head, which can cause swelling, nasal congestion and changes in pressure around the mouth and throat. — Sundeep Venkatesan, The Conversation, 3 Aug. 2026 The platform is expected to help with both hypersonic development and microgravity research by exposing equipment to high-speed flight and low-gravity conditions in a single mission. — Sujita Sinha, Interesting Engineering, 29 July 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, 14 July 2026 Starfall is a SpaceX project to perform microgravity research the FAA described as an in-space manufacturing project designed to make a safe return to Earth. — Richard Tribou, The Orlando Sentinel, 9 July 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

Rhymes for microgravity

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Browse Nearby Words

micrographics
microgravity
microgreen
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Cite this Entry

“Microgravity.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/microgravity. Accessed 5 Aug. 2026.

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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

Britannica.com: Encyclopedia article about microgravity

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