coauthor

/koʊ ˌɔθər/

Other forms: coauthors

A coauthor is someone who works with another person to write something. If three people take turns writing chapters of a novel, each of them can call herself a coauthor.

You can spell the noun coauthor with or without a hyphen — co-author is also correct. Whenever it takes more than one person to write a book, the book can be said to have coauthors. And if you collaborate with a friend on a hand-written magazine, you are one of its coauthors. The word comes from author, or writer, and the prefix co, which means "together" or "mutually."

Definitions of coauthor

1. noun

   a writer who collaborates with others in writing something
   synonyms: joint author

   type of:

   author, writer

   a person who writes (books or stories or articles or the like) professionally (for pay)