1. Manque de pesanteur.
2. État oů l'on n'est pas sujet ŕ l'attraction de la gravitation.
The quality of that which is weightless.
Condition in which there is no gravitational force acting on a body, either because gravitational force is canceled out by equal and opposite acceleration, or because the body is so far outside a planet's gravitational field that no force is exerted upon it.
Astronauts in space, though seemingly “weightless”, do not experience zero gravity because of the motion of their spacecraft.