an·​ti·​grav·​i·​ty | \ ˌan-tē-ˈgra-və-tē How to pronounce antigravity (audio) , ˌan-ˌtī-\

Definition of antigravity

 (Entry 1 of 2)

: reducing, canceling, or protecting against the effect of gravity



Definition of antigravity (Entry 2 of 2)

: a hypothetical effect resulting from cancellation or reduction of a gravitational field

Examples of antigravity in a Sentence

Recent Examples on the Web: Noun

On An Ionic Wind Back in 1928, the British Crown granted Thomas Townsend Brown a patent on an antigravity device that promised to revolutionize flight. Jonathon Keats, Discover Magazine, "The Origins of Flight, From Birds to Bugs to Planes," 21 June 2019 Also: the Houston Astros and the Houston Rockets, Space Camp, antigravity ballpoint pens, astronaut ice cream, the moonwalk, and Space Mountain. National Geographic, "Countdown to a new era inSpace," 17 June 2019 On the other hand, Hayward still can't run without assistance from an antigravity treadmill. Dakota Crawford, Indianapolis Star, "Brad Stevens on Gordon Hayward returning for playoffs: Maybe, 'just to mess with people'," 28 Mar. 2018 Sometimes, an antigravity treadmill is used to lessen body weight as legs are strengthened. Profootballdoc,, "Positive steps for Ryan Shazier," 4 Feb. 2018 The library also will include space experiments such as antigravity drops, microgravity experiments, space food and rockets. Houston Chronicle, "Katy-area calendar of events," 29 Jan. 2018 This week Snell ran at half his body weight on the AlterG antigravity treadmill, a great way to test the knee at full speed without the risk of running on his full body weight. Lori Nickel, Milwaukee Journal Sentinel, "Recovering from knee injuries requires patience for Bucks players," 14 Dec. 2017 Then there was building the telescopes, carrying the mercury to the translunar observatories, constructing the antigravity bases, the discs within discs of whirling silver the size of cities to capture the light. WIRED, "What Happens When an Algorithm Helps Write Science Fiction," 11 Dec. 2017 Thomas is working out six days a week, running on an AlterG antigravity treadmill and doing defensive slides in the pool. Lee Jenkins,, "Isaiah Thomas: 'Best Year of My Career, Worst Year of My Life'," 11 Oct. 2017

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

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First Known Use of antigravity


1944, in the meaning defined above


1949, in the meaning defined above

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Time Traveler for antigravity

The first known use of antigravity was in 1944

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Comments on antigravity

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


appealing forcibly to the mind or reason

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