1. a person or organization that promotes, encourages, or advances something (such as an event, product, or cause)
Usage: common in business and marketing contexts
2. in biology and genetics, a DNA sequence that initiates transcription of a gene
Usage: technical; used in molecular biology

Examples

• The promotor of the concert worked tirelessly to attract sponsors and ticket sales.
• She is a strong promotor of environmental conservation in her community.
• The event promotor negotiated with venues and vendors for the festival.
• In genetics, the promotor region controls when a gene is expressed.
• He became a promotor of renewable energy after learning about climate change.
• The promotor's marketing campaign successfully increased brand awareness.