"chelate complex" meaning in English

{
  "forms": [
    {
      "form": "chelate complexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chelate complex (plural chelate complexes)",
      "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"
        },
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          "name": "Pages with 1 entry",
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          "source": "w"
        },
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          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "a complex where a metal ion is bound to two or more atoms of the chelant"
      ],
      "id": "en-chelate_complex-en-noun-nq7H9j4F",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "complex",
          "complex"
        ],
        [
          "chelant",
          "chelant"
        ]
      ],
      "raw_glosses": [
        "(chemistry) a complex where a metal ion is bound to two or more atoms of the chelant"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "chelate complex"
}

{
  "forms": [
    {
      "form": "chelate complexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chelate complex (plural chelate complexes)",
      "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:Chemistry"
      ],
      "glosses": [
        "a complex where a metal ion is bound to two or more atoms of the chelant"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "complex",
          "complex"
        ],
        [
          "chelant",
          "chelant"
        ]
      ],
      "raw_glosses": [
        "(chemistry) a complex where a metal ion is bound to two or more atoms of the chelant"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "chelate complex"
}