I'm reading up on [maximal sets](http://en.wikipedia.org/wiki/Maximal_set) and the word "coinfinite" pops up in the first sentence. I tried searching on Wolfram Mathworld as well as Google, but nothing concrete has come up. What does it mean and in what context can it be used?



What does coinfinite mean?
Perhaps it means the complement is infinite.
Certainly "cofinite" and "cocountable" are used this way.


