"Iceland spar" meaning in All languages combined

{
  "forms": [
    {
      "form": "Iceland spars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Iceland spar (countable and uncountable, plural Iceland spars)",
      "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"
        }
      ],
      "examples": [
        {
          "ref": "2006, Thomas Pynchon, Against the Day, Vintage, published 2007, page 127",
          "text": "portions of the original aragonite—which make up the nacreous layers of the pearl—had, through “induced paramorphism,” as it was known to the artful sons of Nippon, been selectively changed here and there to a different form of calcium carbonate—namely, to microscopic crystals of the doubly refracting calcite known as Iceland spar.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A transparent form of calcite, used to demonstrate the polarisation of light."
      ],
      "id": "en-Iceland_spar-en-noun-Xpxq28ff",
      "links": [
        [
          "transparent",
          "transparent"
        ],
        [
          "calcite",
          "calcite"
        ],
        [
          "polarisation",
          "polarisation"
        ],
        [
          "light",
          "light"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "Iceland spar"
}

{
  "forms": [
    {
      "form": "Iceland spars",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Iceland spar (countable and uncountable, plural Iceland spars)",
      "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",
        "English terms with quotations",
        "English uncountable nouns",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2006, Thomas Pynchon, Against the Day, Vintage, published 2007, page 127",
          "text": "portions of the original aragonite—which make up the nacreous layers of the pearl—had, through “induced paramorphism,” as it was known to the artful sons of Nippon, been selectively changed here and there to a different form of calcium carbonate—namely, to microscopic crystals of the doubly refracting calcite known as Iceland spar.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A transparent form of calcite, used to demonstrate the polarisation of light."
      ],
      "links": [
        [
          "transparent",
          "transparent"
        ],
        [
          "calcite",
          "calcite"
        ],
        [
          "polarisation",
          "polarisation"
        ],
        [
          "light",
          "light"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "word": "Iceland spar"
}