microgravity

noun

mi·​cro·​grav·​i·​ty ˌmī-krə-ˈgra-və-tē 

: 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

Leaving the International Space Station will be bittersweet for its outgoing crew, who’ve been living aboard the orbital lab since February performing maintenance and upgrades and carrying out dozens of microgravity research experiments. — Josh Dinner, Space.com, 17 Sep. 2026

The orbital test provided a chance to see whether those results held up in microgravity. — Aamir Khollam, Interesting Engineering, 10 Sep. 2026

For several months after their arrival, the astronauts will conduct scientific experiments meant for microgravity and maintain space station operations, which potentially includes spacewalks. — Eric Lagatta, USA Today, 1 Sep. 2026

Nuclear electric propulsion could both minimize launch costs and the time fragile human bodies are subjected to microgravity and radiation. — Harry Goldstein, IEEE Spectrum, 29 Aug. 2026

Word History

First Known Use

1974, in the meaning defined above

Rhymes for microgravity

• intracavity
• supergravity
• cavity
• gravity
• concavity
• depravity

Kids Definition

microgravity

noun

mi·​cro·​grav·​i·​ty ˌmī-krə-ˈgrav-ət-ē 

: the condition of being weightless or of the near absence of gravity