From Longman Business Dictionarymerchandisermer‧chan‧dis‧er /ˈmɜːtʃəndaɪzəˈmɜːrtʃəndaɪzər/ noun [countable]1COMMERCEa person or company that sells goods in a storeThe recession has affected most U.S. toy and clothing merchandisers.Cosmetics are generally sold through drugstores, supermarkets and other mass merchandisers (=large stores that sells more than one kind of product).2American EnglishMARKETING a person or company that arranges the way goods are placed in a storeOutside merchandisers are usually brought in to create shelf displays and manage in-store advertising.