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

The Outriggers combine pinpointing capabilities with a large field of view, said Wen-fai Fong, coauthor on the CHIME study and associate professor of physics and astronomy at Northwestern University’s Weinberg College of Arts and Sciences. —Ashley Strickland, CNN Money, 26 Aug. 2025

In an experiment that used iPads to give students a view of cafeteria cooks fulfilling their hamburger and hot dog orders (and chefs a view of the students), Kim and her coauthors found that diners’ satisfaction increased without sacrificing speed in the kitchen. —Alex Mayyasi, HubSpot, 22 Aug. 2025

Among the book’s coauthors include Griswold and actors Cordis Heard and Michael Saad. —Bob Goldsborough, Chicago Tribune, 21 Aug. 2025

The Live '25 tour was the motivation the coauthors needed to finally finish the book. —Carly Tagen-Dye, People.com, 19 Aug. 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