monthly magazine
A magazine published once a month. Common in publishing and subscription contexts.
この月刊雑誌は毎月25日に発売されます。
This monthly magazine goes on sale on the 25th of every month.
彼はいくつかの月刊雑誌を定期購読している。
He subscribes to several monthly magazines.
月刊誌 and 月刊雑誌 both mean a monthly magazine, but 月刊誌 is the more common, everyday term while 月刊雑誌 sounds slightly more formal or technical.
Compound of 月刊 (monthly publication) and 雑誌 (magazine).