Meaning of PERIODICAL in English
n. 25B6; noun he wrote for two periodicals : JOURNAL, publication, magazine, newspaper, paper, review, digest, gazette, newsletter, organ, quarterly; informal mag, book, glossy.
25B6; adjective the island has periodical earthquakes. : See periodic .
Concise Oxford thesaurus English vocabulary. Краткий оксфордский словарь английского языка тезаурус. 2012