"marginal benefit" meaning in English

{
  "forms": [
    {
      "form": "marginal benefits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "marginal benefit (plural marginal benefits)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Marketing",
          "orig": "en:Marketing",
          "parents": [
            "Business",
            "Economics",
            "Society",
            "Social sciences",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The extra benefit received from a unit increase in the consumption of a good or service. It is calculated as the increase in total benefit divided by the increase in consumption."
      ],
      "id": "en-marginal_benefit-en-noun-gYM1GENd",
      "synonyms": [
        {
          "word": "marginal utility"
        }
      ]
    }
  ],
  "word": "marginal benefit"
}

{
  "forms": [
    {
      "form": "marginal benefits",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "marginal benefit (plural marginal benefits)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Economics",
        "en:Marketing"
      ],
      "glosses": [
        "The extra benefit received from a unit increase in the consumption of a good or service. It is calculated as the increase in total benefit divided by the increase in consumption."
      ]
    }
  ],
  "synonyms": [
    {
      "word": "marginal utility"
    }
  ],
  "word": "marginal benefit"
}