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

Given that bed rest studies have been used to simulate the effects of microgravity, people born with cerebral palsy can give us some sense of how a child’s body might be affected by partial gravity. —Literary Hub, 20 Feb. 2026

Artificial gravity wards against the dangers of microgravity, including bone loss, muscle wasting, heart weakening, and eye destabilization. —Big Think, 19 Feb. 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, 19 Feb. 2026

This is a significant issue for a project intended for deep-space mission launches, microgravity research, and space manufacturing – only for it to be found unsuitable for any of those goals, largely due to the presence of the astronauts themselves. —New Atlas, 15 Feb. 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