vi.

1. 突然不見；消失
   When I turned around, she had vanished.

   我轉過身，她已不見了。

2. 消逝；絕跡
   Many species have now vanished from the earth.

   許多物種已在地球上絕跡了。

vt.

1. 使不見；使消失

n.

1. 【語】消失音[C]

v.

1. disappear suddenly and completely.
   ▸gradually cease to exist.
2. Mathematics  become zero.