coauthor

American  

[koh-aw-ther, koh-aw-] / koʊˈɔ θər, ˈkoʊˌɔ- /

noun

1. one of two or more joint authors. author.

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verb (used with object)

1. to write in joint authorship.

coauthor British  

/ kəʊˈɔːθə /

noun

1. a person who shares the writing of a book, article, etc, with another

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verb

1. (tr) to be the joint author of (a book, article, etc)

Etymology

Origin of coauthor

First recorded in 1860–65; co- + author

Example Sentences

Fernando and his coauthor, Constantinos Charalambous, a research fellow at Imperial College London, tested the technique by analyzing the reentry of debris from China's Shenzhou-15 spacecraft.

From Science Daily • Jan. 24, 2026

Karen Manship, coauthor and Managing Director at the American Institutes for Research, noted that Montessori programs are already widespread in public education.

From Science Daily • Jan. 1, 2026

One of those senators, Russ Feingold—the coauthor of the McCain-Feingold campaign finance law—was particularly vulnerable, as he was up for reelection that year.

From Slate • Oct. 21, 2025

Andrews was a coauthor of the New York Declaration on Animal Consciousness, a declaration signed last April by a long list of animal consciousness, philosophy, neuroscience and cognitive science luminaries at New York University.

From Salon • May 13, 2025

Later, Elizebeth was named as coauthor on one of them.

From "The Woman All Spies Fear" by Amy Butler Greenfield