coauthor

noun

co·​au·​thor (ˌ)kō-ˈȯ-thər 

variants or co-author

plural coauthors or co-authors

: one who collaborates with another person in authoring a literary or dramatic work, a document, a legislative bill, etc.

coauthors of many books and plays

the coauthors of new legislation

coauthor transitive verb

or co-author

coauthored or co-authored; coauthoring or co-authoring

… he coauthored legislation … requiring the publication on the Internet of the cost of all federal contracts, grants, and congressional "earmarks,"…

—Michael Tomasky

a co-authored book

coauthorship

(ˌ)kō-ˈȯ-thər-ˌship 

noun

or co-authorship

… accepting coauthorship on studies to which they did not significantly contribute.

—Mary Murray

Examples of coauthor in a Sentence

Recent Examples on the Web

Researchers said coauthor Dieter Robrecht found the moths during fieldwork for the 2024 edition of a German publication. —Rhiannon Saegert, Miami Herald, 27 Feb. 2025

Along with Sparks and study coauthor Emily Carr, a doctoral student at the museum’s Richard Gilder Graduate School, Martin revisited the birds-of-paradise specimens in AMNH’s drawers. —Mindy Weisberger, CNN, 20 Feb. 2025

His coauthor, Zelati, isn't so quick to dismiss the results. —Nola Taylor Tillman, Space.com, 10 Feb. 2025

One of the coauthors of that textbook, Sergey Vangorodsky, said the book is not used as a teaching tool in Russian schools. —Barbara A. Perry, Newsweek, 28 Jan. 2025

Word History

First Known Use

1827, in the meaning defined above

Rhymes for coauthor

• author

Kids Definition

coauthor

noun

co·​au·​thor

(ˈ)kō-ˈȯ-thər

: an author who works with another author