disappearance
Concise Oxford English Dictionary © 2008 Oxford University Press:
disappear/dɪsəˈpɪə(r)/
▶verb cease to be visible.
■ cease to exist or be in use.
■ (of a person) go missing or (in coded political language) be killed.
– derivatives
disappearance noun.
disappearance noun.
'disappearance' also found in these Oxford entries:

