"polyopsony" meaning in English

{
  "forms": [
    {
      "form": "polyopsonies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "polyopsony (plural polyopsonies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Economics",
          "orig": "en:Economics",
          "parents": [
            "Social sciences",
            "Sciences",
            "Society",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The presence of a few large buyers but many small ones, which may affect the price of commodities"
      ],
      "id": "en-polyopsony-en-noun-iag33ZgP",
      "links": [
        [
          "economics",
          "economics"
        ],
        [
          "buyer",
          "buyer"
        ]
      ],
      "raw_glosses": [
        "(economics) The presence of a few large buyers but many small ones, which may affect the price of commodities"
      ],
      "related": [
        {
          "word": "polypoly"
        }
      ],
      "topics": [
        "economics",
        "sciences"
      ]
    }
  ],
  "word": "polyopsony"
}

{
  "forms": [
    {
      "form": "polyopsonies",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "polyopsony (plural polyopsonies)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "polypoly"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Economics"
      ],
      "glosses": [
        "The presence of a few large buyers but many small ones, which may affect the price of commodities"
      ],
      "links": [
        [
          "economics",
          "economics"
        ],
        [
          "buyer",
          "buyer"
        ]
      ],
      "raw_glosses": [
        "(economics) The presence of a few large buyers but many small ones, which may affect the price of commodities"
      ],
      "topics": [
        "economics",
        "sciences"
      ]
    }
  ],
  "word": "polyopsony"
}