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From mono- +‎ -psony.

Coined by classics scholar Bertrand Hallward of Peterhouse College, Cambridge, and popularized by economist Joan Robinson in her 1933 book The Economics of Imperfect Competition.



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monopsony (plural monopsonies)

  1. A market situation in which there is only one buyer for a product; such a buyer.
    • 1933, Joan Robinson, The Economics of Imperfect Competition, page 219:
      This may be described as the comparison between competitive and monopsony buying, just as the corresponding comparison for selling was called the comparison between competitive and monopoly output.
  2. A buyer with disproportionate power.
    • 2014 March 15, “Turn it off”, in The Economist, volume 410, number 8878:
      If the takeover is approved, Comcast would control 20 of the top 25 cable markets, […]. Antitrust officials will need to consider Comcast’s status as a monopsony (a buyer with disproportionate power), when it comes to negotiations with programmers, whose channels it pays to carry.



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