"tricalcium" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "calcium"
      },
      "expansion": "tri- + calcium",
      "name": "prefix"
    }
  ],
  "etymology_text": "tri- + calcium",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tricalcium (uncountable)",
      "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"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with tri-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Calcium",
          "orig": "en:Calcium",
          "parents": [
            "Alkaline earth metals",
            "Chemical elements",
            "Metals",
            "Matter",
            "Metallurgy",
            "Chemistry",
            "Nature",
            "Technology",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "derived": [
        {
          "word": "tricalcium aluminate"
        },
        {
          "word": "tricalcium citrate"
        },
        {
          "word": "tricalcium phosphate"
        },
        {
          "word": "tricalcium silicate"
        }
      ],
      "glosses": [
        "Three atoms of calcium in a chemical compound."
      ],
      "id": "en-tricalcium-en-noun-RsGDoCPa",
      "links": [
        [
          "calcium",
          "calcium"
        ],
        [
          "chemical compound",
          "chemical compound"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "tricalcium"
}

{
  "derived": [
    {
      "word": "tricalcium aluminate"
    },
    {
      "word": "tricalcium citrate"
    },
    {
      "word": "tricalcium phosphate"
    },
    {
      "word": "tricalcium silicate"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "tri",
        "3": "calcium"
      },
      "expansion": "tri- + calcium",
      "name": "prefix"
    }
  ],
  "etymology_text": "tri- + calcium",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "tricalcium (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with tri-",
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        "en:Calcium"
      ],
      "glosses": [
        "Three atoms of calcium in a chemical compound."
      ],
      "links": [
        [
          "calcium",
          "calcium"
        ],
        [
          "chemical compound",
          "chemical compound"
        ]
      ],
      "tags": [
        "uncountable"
      ]
    }
  ],
  "word": "tricalcium"
}