From Longman Dictionary of Contemporary Englishquarterlyquar‧ter‧ly1 /ˈkwɔːtəli $ ˈkwɔːrtər-/ ●○○ adjective, adverb BTCNproduced or happening four times a year → monthly, annually We publish a quarterly journal. The rent is payable quarterly.
Examples from the Corpus
quarterly• a quarterly newsletterquarterlyquarterly2 noun (plural quarterlies) [countable] TCNa magazine that is produced four times a yearFrom Longman Business Dictionaryquarterlyquar‧ter‧ly /ˈkwɔːtəliˈkwɔːrtər-/ adverb happening or produced once every three monthsInterest will be paid quarterly.a magazine that comes out quarterly —quarterly adjectiveOccidental had a quarterly profit of $45 million.a quarterly newsletter 