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zero gravity

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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.

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The rainy weather could not ________ my elated spirits on my graduation day.
Also ze·ro-g, ze·ro-G [zeer-oh-jee]. /ˈzɪər oʊˈdʒi/.

Origin of zero gravity

First recorded in 1950–55
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2021

British Dictionary definitions for zero gravity

zero gravity

noun

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

Scientific definitions for zero gravity

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.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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