cross-sell

From cross- +‎ sell.

cross-sell (third-person singular simple present cross-sells, present participle cross-selling, simple past and past participle cross-sold)

1. (transitive, intransitive) To sell (additional products) to existing customers.

   The sales training program on cross-selling our best customers profitable advisory services.

   We want salesmen who know how to cross-sell.

cross-sell (plural cross-sells)

1. The act of making such a sale.