- 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
Greason started out at Intel but felt the zero-gravity pull of the rocket macro-process in which he now holds 22 patents.Up to a Point: A 'Space Corvette' in Every Garage
P. J. O’Rourke
September 6, 2014
At zero-gravity, where physical exertion is slight, men can get along on small quantities of food.
Space resorts established for tourists; new sports made possible by zero-gravity, invented and advertised.
- 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
- 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.