Collins COBUILD Advanced Learner's English Dictionary - co-author

also coauthor (co-authors, co-authoring, co-authored) 1. The co-authors of a book, play, or report are the people who have written it together. He is co-author, with Andrew Blowers, of ‘The International Politics of Nuclear Waste’. N-COUNT: oft N of n 2. If two or more people co-author a book, play, or report, they write it together. He’s co-authored a book on Policy for Tourism... Karen Matthews co-authored the study with Lewis Kullers. VERB: V n, V n with n