•The market for further goods and services, such as replacement parts and accessories, subsequent to the sale of a product such as an automobile or computer.
•The industry that serves that market.
•Trading activity in a security immediately following its initial offering to the public.
Etymology tree Proto-Indo-European *h₂ep Proto-Indo-European *-o Proto-Indo-European *h₂epó Proto-Indo-European *-teros Proto-Indo-European *h₂ep(o)teros Proto-Germanic *after Old English æfter Middle English after English after ▲ Old English æfter Old English æfter- Middle English after- English after- English market English aftermarket From after- + market.