1. the practice or process of publishing a book, journal, or other work jointly by two or more publishers
Usage: common in academic and trade publishing

1. to publish (a work) jointly with one or more other publishers
Usage: third-person singular present: copublishes; past tense: copublished; present participle: copublishing

Examples

• The university and the independent press are copublishing a series of regional histories.
• Copublishing allows smaller publishers to share production costs and distribution networks.
• Several academic institutions are copublishing research journals to expand their reach.
• The two companies decided on copublishing the educational textbook to reach more markets.
• Copublishing arrangements often benefit authors by increasing visibility and sales potential.