Disappearance - Definition

n 1: the act of leaving secretly or without explanation [syn:
disappearance, disappearing] [ant: appearance]
2: the event of passing out of sight [ant: appearance]
3: gradually ceasing to be visible [syn: fade,
disappearance]
4: 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"