A moot question is one which has not been decided. (i.e.- If you ask a question which has already been asked by someone else - but to which there is not yet an answer, then YOUR question can be dismissed as 'moot' because it redundant (has already been asked).)

Much the same. A case can be dropped by any person along the way. It may be dropped by the first officer, by a supervisor, or by someone in the prosecutor's office.

A case is dismissed only after it has been filed and a dismissal is accepted by the judge.

No. "Dismissed" means exactly what it says.. the charge was dismissed!

A patient is not dismissed they are discharged.

Tagalog translation of DISMISSED: natiwalag or nasisante