What does 毎 mean?
毎 is a Japanese prefix meaning “every (usu. with events, e.g. every weekend); each” in English. It is written as 毎 in kanji, まい in hiragana, and mai in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
毎日、大体２時間は勉強してるんだ。
I study about two hours every day.