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

Astronauts have been doing lab work on the space station in microgravity — a state where gravity is extremely weak — for 20 years. —Tara Haelle, NPR, 12 Apr. 2026

In an opinion piece in The Houston Chronicle, a former researcher of pharmaceutical purification in microgravity, Gregory Asimakis, argued sending humans to the moon is too costly when robots are available. —Phillip Molnar, San Diego Union-Tribune, 10 Apr. 2026

Joining her is Pettit, a veteran NASA astronaut known for his long-duration missions aboard the International Space Station and his approach to science in microgravity. —Samantha Mathewson, Space.com, 10 Apr. 2026

This is largely due to how bodily fluids behave and realign in microgravity, which frequently causes swelling in the nasal passages. —Andrew Paul, Popular Science, 9 Apr. 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