advertiser
/ˈædvɜːrtɪsər/Definitions
1. noun
A person, business, or organization that promotes or sells a product, service, or idea to the public through various media channels.
“The company is looking for experienced advertisers to promote their new product line.”
2. verb
To promote or sell a product, service, or idea to the public through various media channels.
“The new restaurant is going to advertise its grand opening event to attract more customers.”
3. noun
A person or organization that rents or sponsors space in a publication or media outlet to promote their product or service.
“The magazine features several advertisers, including a popular clothing brand.”