[ weyt-lis ]
/ ˈweɪt lɪs /


being without apparent weight, as a freely falling body or a body acted upon by a force that neutralizes gravitation.

Origin of weightless

First recorded in 1540–50; weight + -less

Related forms

weight·less·ly, adverbweight·less·ness, noun
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for weightlessness

British Dictionary definitions for weightlessness


/ (ˈweɪtləs) /


(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)
  1. (of economic activity) based on the supply of information and ideas rather than trade in physical goodsthe weightless economy
  2. (of a company) having very few physical assetsweightless dot.coms

Derived Forms

weightlessness, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012