›if a brand or product outsells another, it is bought in larger quantities than the other brand or product: Last spring, horticultural stock (plants) outsold manufactured goods (tools, sheds, and chemicals) by 57% to 46%.Analogue radios are now outsold by digital radios by 30 to 1.
›to sell more products than a competitor: Airbus was outsold by its arch-rival Boeing in 2006 for the first time in five years.