"dedendum" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "dedere"
      },
      "expansion": "Latin dedere",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin dedere.",
  "forms": [
    {
      "form": "dedendums",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "dedenda",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "dedenda"
      },
      "expansion": "dedendum (plural dedendums or dedenda)",
      "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": "English undefined derivations",
          "parents": [
            "Undefined derivations",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The difference between the radius of the pitch circle of a gear and its root circle."
      ],
      "id": "en-dedendum-en-noun-xuLKlEnN",
      "links": [
        [
          "radius",
          "radius"
        ],
        [
          "pitch circle",
          "pitch circle"
        ],
        [
          "gear",
          "gear"
        ],
        [
          "root circle",
          "root circle"
        ]
      ],
      "related": [
        {
          "word": "addendum"
        }
      ]
    }
  ],
  "word": "dedendum"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "la",
        "3": "dedere"
      },
      "expansion": "Latin dedere",
      "name": "uder"
    }
  ],
  "etymology_text": "From Latin dedere.",
  "forms": [
    {
      "form": "dedendums",
      "tags": [
        "plural"
      ]
    },
    {
      "form": "dedenda",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "s",
        "2": "dedenda"
      },
      "expansion": "dedendum (plural dedendums or dedenda)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "addendum"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English nouns with irregular plurals",
        "English terms derived from Latin",
        "English undefined derivations"
      ],
      "glosses": [
        "The difference between the radius of the pitch circle of a gear and its root circle."
      ],
      "links": [
        [
          "radius",
          "radius"
        ],
        [
          "pitch circle",
          "pitch circle"
        ],
        [
          "gear",
          "gear"
        ],
        [
          "root circle",
          "root circle"
        ]
      ]
    }
  ],
  "word": "dedendum"
}