'Disappearance' definitions:

Definition of 'disappearance'

From: WordNet
noun
The act of leaving secretly or without explanation [syn: disappearance, disappearing] [ant: appearance]
noun
The event of passing out of sight [ant: appearance]
noun
Gradually ceasing to be visible [syn: fade, disappearance]
noun
Ceasing to exist; "he regretted the disappearance of Greek from school curricula"; "what was responsible for the disappearance of the rainforest?"; "the disappearance of resistance at very low temperatures"

Definition of 'Disappearance'

From: GCIDE
  • Disappearance \Dis`ap*pear"ance\, n. The act of disappearing; cessation of appearance; removal from sight; vanishing. --Addison. [1913 Webster]

Synonyms of 'disappearance'

From: Moby Thesaurus