What does 加入 mean?
加入 is a Japanese noun meaning “becoming a member, admission” in English. It is written as 加入 in kanji, かにゅう in hiragana, and kanyuu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
まさかの時のために彼は保険に加入した。
He insured himself for a rainy day.