1. (

• disappearance ,
• disappearing

) the act of leaving secretly or without explanation ;

2. (

• disappearance

) the event of passing out of sight ;

3. (

• fade ,
• disappearance ,

) gradually ceasing to be visible ;

4. (

• disappearance ,

) 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" ;