antigravity

[an-tee-grav-i-tee, an-tahy-]
noun
  1. Physics. the antithesis of gravity; a hypothetical force by which a body of positive mass would repel a body of negative mass.
  2. (not in technical use) a controllable force that can be made to act against the force of gravity.
adjective
  1. (not in technical use) counteracting the force of gravity: The antigravity drive in this spaceship will enable us to reach Polaris.

Origin of antigravity

First recorded in 1940–45; anti- + gravity
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for antigravity

Historical Examples of antigravity