Definition of "prosumer"

prosumer¹

/pɹəʊˈsjuːmə/

noun
plural prosumers
1. A person in postindustrial society who combines the economic roles of producer and consumer.
  Quotations
  During the First Wave most people consumed what they themselves produced. They were neither producers nor consumers in the usual sense. They were instead what might be called "prosumers."]
  [1980, Alvin Toffler, The Third Wave

prosumer²

/pɹəʊˈsjuːmə/

adjective
not comparable
1. (marketing, of a consumer product) Targeted at serious, enthusiastic consumers, incorporating professional features but often modified for non-professional use.
2. (marketing, of a consumer product) High-end.
noun
plural prosumers
1. 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.