NounWeightlessness (countable and uncountable; plural Weightlessnesses)
- (uncountable) The state of being free from the effects of gravity.
- (countable) An experience or instance of being weightless.
- Plural is rare.
airiness, ascent, asteroids, aurora particles, blackout, bubbliness, buoyancy, cosmic particles, cosmic ray bombardment, daintiness, delicacy, downiness, ethereality, floatability, fluffiness, foaminess, frothiness, gentleness, gossameriness, intergalactic matter, lack of weight, levitation, levity, lightness, meteor dust impacts, meteors, radiation, softness, space bullets, tenderness, the bends, unheaviness, volatility, yeastiness