Short version: What's the opposite of "coplanar"?
Long version: Say two things are sharing the same plane ("plane" geometrically/mathematically speaking, not an airplane). You could say they're "coplanar". Now, let's say they're not coplanar. Instead of saying "non-coplanar", is there a shorter way to say this? I guess basically I'm wondering if there's a prefix that's the opposite of "co-"; a prefix that expresses the idea of being apart/not coexisting.
I feel like I should know this and it's driving me crazy.