1. a person or organization that jointly promotes or sponsors an event, product, or initiative with one or more other parties
Usage: commonly used in business, entertainment, and marketing contexts
2. in molecular biology, a DNA sequence that works together with a promoter to regulate gene expression
Usage: technical; used in genetics and biochemistry

Examples

• The two companies served as copromoters of the music festival, sharing marketing costs and responsibilities.
• Netflix and the production studio acted as copromoters for the new documentary series.
• The copromoter helped organize the concert alongside the primary event organizer.
• In genetics, the copromoter region enhances the binding of RNA polymerase to the promoter.
• Multiple copromoters collaborated to bring the international conference to the city.
• The copromoter contributed significant funding and promotional resources to the campaign.