0 to disappear or stop being present or existing, especially in a sudden, surprising way -- （尤指突然）消失，灭绝
We watched the building vanish under a mantle of thick grey smoke as the fire swiftly moved through it.
One moment he was standing behind me, the next he had vanished in a puff of smoke.
Where are my keys? They can't just have vanished.
A purely imaginary constant could be added on the right here, but it can be assumed to vanish.
The vanishing tropical rain forest as an environment for bryophytes and lichens.
In fact, for vanishing gravitational field, these equilibria have no well-defined limit.
