See merchandising in Webster's New World College Dictionary
noun
that part of marketing involved with promoting sales of merchandise, as by consideration of the most effective means of selecting, pricing, displaying, and advertising items for sale in a retail store
See merchandising in American Heritage Dictionary 4
also mer·chan·diz·ing(mûrˈchən-dīˌzĭng)
noun
The promotion of merchandise sales, as by coordinating production and marketing and developing advertising, display, and sales strategies.