Tell me if I'm not correct, but I think it means: Continuous Velocity Tranny. Anyways, something like that.
It is employed mostly in Snowmobiles, and it just means that the tranny is always "shifting". Think of it as having a belt put between two cones, now when you push those cones together, you make the belt wider......it's hard to explain.
Anyone got a link to one of these pieces of work?
Later!