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coauthor

[koh-aw-ther, koh-aw-]
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noun
  1. one of two or more joint authors.
verb (used with object)
  1. to write in joint authorship.

Origin of coauthor

First recorded in 1860–65; co- + author
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for coauthor

coauthor

noun
  1. a person who shares the writing of a book, article, etc, with another
verb
  1. (tr) to be the joint author of (a book, article, etc)
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for coauthor

n.

also co-author, from co- + author. From 1948 as a verb. Related: Coauthored; coauthoring.

Online Etymology Dictionary, © 2010 Douglas Harper