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, that balance changes. Rachael Seidler, Space.com, 7 Mar. 2026 There, in microgravity, the miniature labs grow molecular crystals that are purer than those produced in Earth’s gravity for use in pharmaceuticals. Roger Vincent, Los Angeles Times, 4 Mar. 2026 Instead the agency will rejigger its planned Artemis III mission to test in-orbit capabilities such as using the astronauts’ space suits in microgravity and rendezvousing with at least one of the spacecraft that NASA hopes to use as a lunar lander. Claire Cameron, Scientific American, 27 Feb. 2026 Now that the space station is once again fully staffed, the seven astronauts aboard have kept themselves busy with a slew of research experiments as the four new arrivals familiarize themselves with life in microgravity. Eric Lagatta, USA Today, 24 Feb. 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 13 Mar. 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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