To Be Released
intransitive verb, ichidan verb
This word consists of kanji with hiragana attached. Because the hiragana ends with an う sound, you know this word is a verb. The kanji itself means release and the verb vocab version means to be released. You can differentiate this one from 放す (to release) by thinking that it's pretty rare (れる) for you to be released by your arch nemesis. He just let you go, strangely. How rare.
The reading comes from 放す. As long as you know that word you can apply that reading over here as well.
風船が女の子の手から放れた。
The balloon escaped from the girl's hands.
あの犬はどうやってクサリから放れることができたんだろう。
I wonder how that dog was able to get off its leash.
息子が私たちの手から放れたら、アメリカに住むつもりです。
Once our son is off our hands, we are planning to live in the U.S.