a top-selling product has sold in larger numbers than other products:
• It's the top-selling drink and the biggest brand in the world.
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top-selling UK US (also top selling) adjective [before noun] COMMERCE
► extremely popular and selling in larger quantities than other brands: »
a top-selling brand/product/model
»They manufacture three of the world's ten top-selling drugs.
»She has her own TV show and two top-selling albums.
► producing books, songs, etc. that are extremely popular and sell in larger quanitites than others: »
She's one of our top-selling authors.
Financial and business terms. 2012.