Origin: Germanic Old English suffix
Gibbousness has 2 different meanings across 1 category:
something that bulges out or is protuberant or projects from its surroundings
"the gun in his pocket made an obvious bulge"
"the hump of a camel"
"he stood on the rocky prominence"
"the occipital protuberance was well developed"
"the bony excrescence between its horns"
The quality of being gibbous.