weight·less

[weyt-lis]
adjective
being without apparent weight, as a freely falling body or a body acted upon by a force that neutralizes gravitation.

Origin:
1540–50; weight + -less

weight·less·ly, adverb
weight·less·ness, noun
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Based on the Random House Dictionary, © Random House, Inc. 2013.
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weightless (ˈweɪtləs) [Click for IPA pronunciation guide]
 
adj
1.  (of a body) having no actual weight; a state in which an object has no actual weight (because it is in space and unaffected by gravitational attraction) or no apparent weight (because the gravitational attraction equals the centripetal force and the object is in free fall)
2.  commerce
 a.  (of economic activity) based on the supply of information and ideas rather than trade in physical goods: the weightless economy
 b.  (of a company) having very few physical assets: weightless dot.coms
 
'weightlessness
 
n

00:10
Weightless is always a great word to know.
So is quincunx. Does it mean:
the offspring of a zebra and a donkey.
an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle.
weightlessness (ˈweɪtlɪsnɪs) [Click for IPA pronunciation guide]
 
n
a state in which an object has no actual weight (because it is in space and unaffected by gravitational attraction) or no apparent weight (because the gravitational attraction equals the centripetal force and the object is in free fall)
 
'weightless
 
adj

Collins English Dictionary - Complete & Unabridged 10th Edition
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Example sentences
Weightless, sinuous as a dolphin, you move through halls of light.
Then the slope turned vertical beneath him and he went weightless as he began
  to drop straight down the face.
And they don't laugh anymore because nothing is funny to them ever again after
  being weightless in space.
It wishes to mobilize nostalgia in order to give glamour and energy to a
  dismal, weightless campaign.
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