Search Result for "weightlessness": 
Wordnet 3.0

NOUN (1)

1. the property of being comparatively small in weight;
- Example: "the lightness of balsa wood"
[syn: lightness, weightlessness]



WordNet (r) 3.0 (2006):

weightlessness
    n 1: the property of being comparatively small in weight; "the
         lightness of balsa wood" [syn: lightness,
         weightlessness] [ant: heaviness, weightiness]