zero gravity

noun

Physics.

the condition in which the apparent effect of gravity is zero, as in the case of a body in free fall or in orbit.

zero gravity

noun

the state or condition of weightlessness

zero gravity

The condition of real or apparent weightlessness occurring when any gravitational forces acting on a body meet with no resistance so the body is allowed to accelerate freely. Bodies in free fall (including trajectories like orbits) experience zero gravity; bodies at rest on the Earth's surface do not, since they are subject to the counterforce of the surface supporting them.

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Word History and Origins

Origin of zero gravity¹

First recorded in 1950–55

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Example Sentences

Examples have not been reviewed.

Blue Origin says its New Shepard passengers are trained over two days with a focus on physical fitness, emergency protocols, details about the safety measures and procedures for zero gravity.

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Imagine spending weeks lounging around in bed and never having to get up – this is actually one technique scientists use to investigate the impact of zero gravity - and you start to get the picture.

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Three different machines help to counter the effect of living in zero gravity.

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Zero gravity has given her a style that would take a lot of product to achieve on Earth.

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To offset the loss of bone and muscle while living in zero gravity, astronauts routinely exercise for two hours every day, six days a week.

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zero-emission vehicle zero grazing

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