antigravity

[ an-tee-grav-i-tee, an-tahy- ]

/ ˌæn tiˈgræv ɪ ti, ˌæn taɪ- /

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noun

Physics. the antithesis of gravity; a hypothetical force by which a body of positive mass would repel a body of negative mass.

(not in technical use) a controllable force that can be made to act against the force of gravity.

adjective

(not in technical use) counteracting the force of gravity: The antigravity drive in this spaceship will enable us to reach Polaris.

QUIZ

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Which of the following nouns has an irregular plural form?

Origin of antigravity

First recorded in 1940–45; anti- + gravity

During the spring of her freshman year, the trainers thought she’d sustained a tendon injury and insisted she try running on an antigravity treadmill.
Running’s Cultural Reckoning Is Long Overdue|Christine Yu|May 27, 2021|Outside Online
A leisurely spacewalk followed by a workout in an antigravity gym sounds ideal.
Imagining a five-star hotel among the stars|Liz Langley|April 8, 2021|Washington Post
Frese said rehab has gone well and that Reese has begun light running on an antigravity treadmill.
Brenda Frese pulls even with Chris Weller atop Terps’ all-time wins list|Kareem Copeland|February 5, 2021|Washington Post
It's supposed to have antigravity powers, too, like whatever it was that took Superior up in the first place.
And Then the Town Took Off|Richard Wilson

A rocket works against gravity, but they don't call that antigravity, do they?
By Proxy|Gordon Randall Garrett
I almost got sick—so close to it I started telling myself it must be something antigravity did to your stomach.
The Night of the Long Knives|Fritz Reuter Leiber
But just then the plane took a sickening bounce, as if its antigravity had only started to operate within yards of the ground.
The Night of the Long Knives|Fritz Reuter Leiber
Like the radar he made out of a TV set and the antigravity and the atomic power plant he invented to run it all with.
We Didn't Do Anything Wrong, Hardly|Roger Kuykendall