mi·​cro·​grav·​i·​ty | \ ˌmī-krə-ˈgra-və-tē How to pronounce microgravity (audio) \

Definition of microgravity

: 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

Before the bubbly flows, customers will have three days of training to prepare for the G-forces and learn how to move in microgravity. Justin Bachmanbloomberg, Los Angeles Times, "Virgin Galactic unveils its new space base, but no flights yet," 16 Aug. 2019 After a long day of floating around in microgravity doing experiments, astronauts on the International Space Station retire to their sleep station, which is little more than a closet, for some shuteye. Daniel Oberhaus, WIRED, "The Surprisingly Cozy Truths of Sleeping in Space," 8 Aug. 2019 Researchers want to see how the samples are affected by microgravity, which could eventually help humans live and travel in space. Gary Robbins, San Diego Union-Tribune, "Experiment from UC San Diego delivered to International Space Station," 28 July 2019 The experiment will focus on printing cardiac-like tissue in space, a precursor to one day printing organs in microgravity. Chabeli Herrera, orlandosentinel.com, "Those sonic booms you heard? That was SpaceX sending critical cargo to the ISS," 26 July 2019 In microgravity, which is sometimes misleadingly referred to as zero gravity, there are limited effects of gravity and objects appear to be weightless. Julia Hollingsworth, CNN, "Frozen sperm can survive space travel, preliminary study suggests," 24 June 2019 Also, funky things happen in microgravity, where neither cells nor entire bodies can sense which direction is up or down. National Geographic, "Here’s why women may be the best suited for spaceflight," 17 June 2019 In 2009, Wakayama extracted eggs and sperm from mice, then set them loose in a device that simulates microgravity (the technical term for orbiting astronauts’ weightlessness). Amber Jorgenson, Discover Magazine, "Sex and the Cosmic City," 18 Apr. 2019 Adidas will study how a soccer ball spins in microgravity as part of aerodynamics research. Robin Goist, cleveland.com, "Goodyear sends tire research to International Space Station," 19 July 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'microgravity.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of microgravity

1974, in the meaning defined above

Keep scrolling for more

Learn More about microgravity

Statistics for microgravity

Last Updated

22 Aug 2019

Look-up Popularity

Time Traveler for microgravity

The first known use of microgravity was in 1974

See more words from the same year

More from Merriam-Webster on microgravity

Rhyming Dictionary: Words that rhyme with microgravity

Britannica English: Translation of microgravity for Arabic Speakers

Britannica.com: Encyclopedia article about microgravity

Comments on microgravity

What made you want to look up microgravity? Please tell us where you read or heard it (including the quote, if possible).


readily or continually undergoing change

Get Word of the Day daily email!

Test Your Vocabulary

Musical Words Quiz

  • gramophone
  • Which word describes a musical performance marked by the absence of instrumental accompaniment?
Spell It

Can you spell these 10 commonly misspelled words?

Word Winder's CrossWinder

Test Your Knowledge - and learn some interesting things along the way.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!