Oxford Dictionary English cross-selling nounnoun BrE BrE//ˌkrɒs ˈselɪŋ// ; NAmE NAmE//ˌkrɔːs ˈselɪŋ// [uncountable] (business) Add to my wordlistjump to other resultsthe activity of selling a different extra product to a customer who is already buying a product from a companySee cross-selling in the Oxford Advanced American DictionaryCheck pronunciation: cross-selling oxfordlearnersdictionaries.com