What does ～毎に mean?
～毎に is a Japanese suffix meaning “for every” in English. It is written as ～毎に in kanji, ～ごとに in hiragana, and ～gotoni in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
バスは１０分ごとに通っている。
The buses run every ten minutes.