noun.
The state of being gibbous or gibbose; roundness or protuberance of outline; convexity.
noun.
A protuberance; a round or swelling prominence. Specifically
noun.
In botany, a swelling or protuberance at one side of an organ, usually near the base, as of a calyx.
noun.
In zoology, an irregular large protuberance, somewhat rounded, but not forming the segment of a sphere; a hump: as, the gibbosity of or on the back of a camel or zebu.