So what else is gibbous?
Well, gibbous was originally to do with hunchbacks. Unfortunately we're about seventy million years too late to see this creature:
which was called Deinocheirus and was quite easy to see, being as much as three point four metres tall and twelve tonnes in weight (did I say unfortunately seventy years too late?).
But we still have the beautiful camel:
Photo by Bart de Goeij (although...is that really a camel, or actually a close-up of an undercover llama?)
We are also surrounded by beetles, including the lovely ladybird:
Photo by Zachi Evenor
A production of Rigoletto will also provide a hunchback:
though happily as medicine advances in real life human hunchbacks are becoming rarer.
Lastly, and easily easiest to spot, anything bulging can be called gibbous: and while hunchbacks are becoming rarer, bulges in other directions are burgeoning.
Here's rather an old one, shining, appropriately, like a setting moon:
Georges-Louis Leclerc, Comte de Buffon, by François Hubert Drouais.
Spot the Frippet: something gibbous. This word comes from the Latin gibbōsus, humpbacked, from gibba, a hump.