0 present participle of disappear
1 If people or things disappear, they go somewhere where they cannot be seen or found:
I'll just say the magic word and the rabbit will disappear - Abracadabra!
It's funny how Alec always disappears whenever there's work to be done.
With the end of the war, the volunteer army was swiftly reduced in size, disappearing entirely within a couple of years.
This once plentiful source of old lotus fruits is rapidly disappearing.
Many habitats such as mangroves and wetlands are disappearing fast.