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zero gravity

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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.
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. 2018

Examples from the Web for zero gravity

Contemporary Examples

Historical Examples

  • At zero-gravity, where physical exertion is slight, men can get along on small quantities of food.

    The Planet Strappers

    Raymond Zinke Gallun

  • Space resorts established for tourists; new sports made possible by zero-gravity, invented and advertised.

    The Planet Strappers

    Raymond Zinke Gallun


British Dictionary definitions for zero gravity

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 in Science

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