"metastannate" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "metastannic",
        "3": "ate"
      },
      "expansion": "metastannic + -ate",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "stannate"
      },
      "expansion": "meta- + stannate",
      "name": "prefix"
    }
  ],
  "etymology_text": "metastannic + -ate or meta- + stannate",
  "forms": [
    {
      "form": "metastannates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metastannate (plural metastannates)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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        {
          "kind": "other",
          "name": "English terms prefixed with meta-",
          "parents": [],
          "source": "w"
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        {
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          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Inorganic chemistry",
          "orig": "en:Inorganic chemistry",
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          "source": "w"
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      ],
      "glosses": [
        "A salt of metastannic acid"
      ],
      "id": "en-metastannate-en-noun-4RyZTTj~",
      "links": [
        [
          "inorganic chemistry",
          "inorganic chemistry"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "metastannic acid",
          "metastannic acid"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry) A salt of metastannic acid"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "metastannate"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "metastannic",
        "3": "ate"
      },
      "expansion": "metastannic + -ate",
      "name": "suffix"
    },
    {
      "args": {
        "1": "en",
        "2": "meta",
        "3": "stannate"
      },
      "expansion": "meta- + stannate",
      "name": "prefix"
    }
  ],
  "etymology_text": "metastannic + -ate or meta- + stannate",
  "forms": [
    {
      "form": "metastannates",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "metastannate (plural metastannates)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "en:Inorganic chemistry"
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      "glosses": [
        "A salt of metastannic acid"
      ],
      "links": [
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          "inorganic chemistry",
          "inorganic chemistry"
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          "salt",
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        ],
        [
          "metastannic acid",
          "metastannic acid"
        ]
      ],
      "raw_glosses": [
        "(inorganic chemistry) A salt of metastannic acid"
      ],
      "topics": [
        "chemistry",
        "inorganic-chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "metastannate"
}