Dismissal
Discharge
noun, する verb
You quit your job but with a pretty good excuse to back it up, so you get a dismissal instead of just quitting outright. If you're in the army and you do this it's called a discharge.
ひめん
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.
あの大臣は罷免されたよ。
That cabinet minister was dismissed.