"negative crystal" meaning in All languages combined

{
  "forms": [
    {
      "form": "negative crystals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "negative crystal (plural negative crystals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Optics",
          "orig": "en:Optics",
          "parents": [
            "Physics",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A uniaxial crystal, such as one of calcite, in which the extraordinary wave travels faster than the ordinary wave"
      ],
      "id": "en-negative_crystal-en-noun-avysvdm4",
      "links": [
        [
          "optics",
          "optics"
        ],
        [
          "uniaxial",
          "uniaxial"
        ],
        [
          "calcite",
          "calcite"
        ],
        [
          "extraordinary wave",
          "extraordinary wave"
        ],
        [
          "ordinary wave",
          "ordinary wave"
        ]
      ],
      "raw_glosses": [
        "(optics) A uniaxial crystal, such as one of calcite, in which the extraordinary wave travels faster than the ordinary wave"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "optics",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "categories": [
        {
          "_dis": "44 56",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A crystal that contains a cavity"
      ],
      "id": "en-negative_crystal-en-noun-hH9JOkFU",
      "links": [
        [
          "cavity",
          "cavity"
        ]
      ]
    }
  ],
  "word": "negative crystal"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns"
  ],
  "forms": [
    {
      "form": "negative crystals",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "negative crystal (plural negative crystals)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Optics"
      ],
      "glosses": [
        "A uniaxial crystal, such as one of calcite, in which the extraordinary wave travels faster than the ordinary wave"
      ],
      "links": [
        [
          "optics",
          "optics"
        ],
        [
          "uniaxial",
          "uniaxial"
        ],
        [
          "calcite",
          "calcite"
        ],
        [
          "extraordinary wave",
          "extraordinary wave"
        ],
        [
          "ordinary wave",
          "ordinary wave"
        ]
      ],
      "raw_glosses": [
        "(optics) A uniaxial crystal, such as one of calcite, in which the extraordinary wave travels faster than the ordinary wave"
      ],
      "topics": [
        "engineering",
        "natural-sciences",
        "optics",
        "physical-sciences",
        "physics"
      ]
    },
    {
      "glosses": [
        "A crystal that contains a cavity"
      ],
      "links": [
        [
          "cavity",
          "cavity"
        ]
      ]
    }
  ],
  "word": "negative crystal"
}