gibbous (ˈɡɪbəs) or gibbose
adj
1. (Astronomy) (of the moon or a planet) more than half but less than fully illuminated
2. having a hunchback; hunchbacked
3. bulging
Evening Pysbbo. I'm sure no-one has ever had cause to use the word in your presence.
I'm familiar with the word from the term gibbous moon
http://en.wikipedia.org/wiki/Lunar_phase