Pronunciation: (an"tē-grav'i-tē, an"tī-),[key] —n. 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.
—adj. (not in technical use) counteracting the force of gravity: The antigravity drive in this spaceship will enable us to reach Polaris.