Wordnet 3.0
ADJECTIVE (1)
1.
having little or no weight or apparent gravitational pull;
light;
- Example: "floating freely in a weightless condition"- Example: "a baby bat...fluffy and weightless as a moth"- Example: "jackets made of a weightless polyester fabric"
The Collaborative International Dictionary of English v.0.48:
Weightless \Weight"less\, a.
Having no weight; imponderable; hence, light. --Shak.
[1913 Webster]
WordNet (r) 3.0 (2006):
weightless
adj 1: having little or no weight or apparent gravitational
pull; light; "floating freely in a weightless condition";
"a baby bat...fluffy and weightless as a moth"; "jackets
made of a weightless polyester fabric" [ant: weighty]