Meaning of “disappear” - Learner’s Dictionary

disappear

verb [ I ] us uk /ˌdɪsəˈpɪər/
NOT SEE

B1 to become impossible to see:

She watched him disappear into the crowd.

More examples

GO

B1 to suddenly go somewhere and become impossible to find:

Her husband disappeared in 1991.
STOP EXISTING

B2 to stop existing:

These flowers are disappearing from our countryside.
disappearance noun [ C, U ] us uk /ˌdɪsəˈpɪərəns/

B2

Police are investigating the girl's disappearance.

See also

(Definition of “disappear” from the Cambridge Learner’s Dictionary © Cambridge University Press)