WordReference Random House Unabridged Dictionary of American English © 2019
- Communications, Businessthe market for replacement parts, accessories, and equipment for the care or enhancement of the original product, esp. an automobile, after its sale to the consumer:The company holds a large share in the automotive radio aftermarket.
- Communications, Businessany additional market created by a product after the primary market:Television is the perfect aftermarket for old movies.
- Stock Exchange, BusinessSee secondary market.
- after + market 1935–40