1. to publish (a book, journal, or other work) jointly with one or more other publishers
Usage: transitive verb; common in academic and trade publishing

Examples

• The two university presses decided to copublish the scholarly anthology.
• Several international publishers copublished the multilingual dictionary.
• They copublished the research findings in a joint edition.
• The independent press copublished the author's memoir with a larger distributor.
• Academic institutions often copublish journals to share costs and reach broader audiences.