Longman Dictionary English From Longman Dictionary of Contemporary EnglishRelated topics: Newspapers, printing, publishingop. cit.op. cit. /ˌɒp ˈsɪt $ ˌɑːp-/ TCNan abbreviation used in formal writing to refer to a book that has been mentioned beforeOrigin op. cit. (1800-1900) Latin opus citatum “the work quoted” ldoceonline.com
