noun: (buzzword) A person in postindustrial society who combines the economic roles of producer and consumer
adjective: (marketing, of a consumer product) Targeted at serious, enthusiastic consumers, incorporating professional features but often modified for non-professional use.
adjective: (marketing, of a consumer product) high-end
noun: A serious, enthusiastic consumer: not professional (earning money), but of similar interest and skills to a (generally lower level) professional, or aspiring to such. The target market of prosumer equipment.
