from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The quality of being gibbous.
from The Century Dictionary and Cyclopedia
- n. The state of being gibbous; protuberance; a prominence; convexity.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. something that bulges out or is protuberant or projects from its surroundings
gibbous + -ness (Wiktionary)