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zero gravity

noun

, Physics.
  1. 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

  1. the state or condition of weightlessness
“Collins English Dictionary — Complete & Unabridged” 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012


zero gravity

  1. 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

Three different machines help to counter the effect of living in zero gravity, which reduces bone density.

From BBC

I paid a $100 visitor fee to enter and relaxed into a plush, leather Zero Gravity Chair, with heated seats and massage nodes, my head draped backward and my feet pointed high.

Three different machines help to counter the effect of living in zero gravity, which reduces bone density.

From BBC

I paid a $100 visitor fee to enter and relaxed into a plush, leather Zero Gravity Chair, with heated seats and massage nodes, my head draped backward and my feet pointed high.

The researchers have now been able to overcome these limitations in zero gravity.

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zero-emission vehiclezero grazing