periodical
🇺🇸
/ˌpɪriˈɑːdɪkl/
🇬🇧
/ˌpɪəriˈɒdɪkl/
a magazine or journal that comes out regularly, like every week or month
I read a periodical about science every month to learn new things.
我每個月都會閱讀一本科學期刊來學習新知識。