"permanent white" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "permanent white (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "barite used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide."
      ],
      "id": "en-permanent_white-en-noun-PW60uDS-",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "barite",
          "barite"
        ],
        [
          "white lead",
          "white lead"
        ]
      ],
      "raw_glosses": [
        "(chemistry) barite used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "permanent white"
}

{
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "permanent white (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Chemistry"
      ],
      "glosses": [
        "barite used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "barite",
          "barite"
        ],
        [
          "white lead",
          "white lead"
        ]
      ],
      "raw_glosses": [
        "(chemistry) barite used as a white pigment or paint, in distinction from white lead, which tarnishes and darkens from the formation of the sulphide."
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "permanent white"
}