"decreasing function" meaning in English

{
  "forms": [
    {
      "form": "decreasing functions",
      "tags": [
        "plural"
      ]
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      "args": {},
      "expansion": "decreasing function (plural decreasing functions)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Functions",
          "orig": "en:Functions",
          "parents": [
            "Algebra",
            "Calculus",
            "Geometry",
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
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          "kind": "topical",
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        }
      ],
      "derived": [
        {
          "word": "strictly decreasing function"
        }
      ],
      "glosses": [
        "Any function of a real variable whose value decreases (or is constant) as the variable increases."
      ],
      "id": "en-decreasing_function-en-noun-HyP77bcn",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real",
          "real"
        ],
        [
          "variable",
          "variable"
        ],
        [
          "value",
          "value"
        ],
        [
          "decrease",
          "decrease"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "increase",
          "increase"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Any function of a real variable whose value decreases (or is constant) as the variable increases."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "sv",
          "lang": "Swedish",
          "sense": "mathemetical function",
          "tags": [
            "common-gender"
          ],
          "word": "avtagande funktion"
        }
      ]
    }
  ],
  "word": "decreasing function"
}

{
  "derived": [
    {
      "word": "strictly decreasing function"
    }
  ],
  "forms": [
    {
      "form": "decreasing functions",
      "tags": [
        "plural"
      ]
    }
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  "lang_code": "en",
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        "en:Functions",
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      "glosses": [
        "Any function of a real variable whose value decreases (or is constant) as the variable increases."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "real",
          "real"
        ],
        [
          "variable",
          "variable"
        ],
        [
          "value",
          "value"
        ],
        [
          "decrease",
          "decrease"
        ],
        [
          "constant",
          "constant"
        ],
        [
          "increase",
          "increase"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Any function of a real variable whose value decreases (or is constant) as the variable increases."
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "sv",
      "lang": "Swedish",
      "sense": "mathemetical function",
      "tags": [
        "common-gender"
      ],
      "word": "avtagande funktion"
    }
  ],
  "word": "decreasing function"
}