"chemical indicator" meaning in All languages combined

{
  "forms": [
    {
      "form": "chemical indicators",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chemical indicator (plural chemical indicators)",
      "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"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "any substance used to classify another, often by changing colour"
      ],
      "id": "en-chemical_indicator-en-noun-x7saX9OP",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "classify",
          "classify"
        ],
        [
          "colour",
          "colour"
        ]
      ],
      "raw_glosses": [
        "(chemistry) any substance used to classify another, often by changing colour"
      ],
      "related": [
        {
          "word": "complexometric indicator"
        },
        {
          "word": "pH indicator"
        },
        {
          "word": "redox indicator"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "chemical indicator"
      ]
    }
  ],
  "word": "chemical indicator"
}

{
  "forms": [
    {
      "form": "chemical indicators",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "chemical indicator (plural chemical indicators)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "complexometric indicator"
    },
    {
      "word": "pH indicator"
    },
    {
      "word": "redox indicator"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Chemistry"
      ],
      "glosses": [
        "any substance used to classify another, often by changing colour"
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "substance",
          "substance"
        ],
        [
          "classify",
          "classify"
        ],
        [
          "colour",
          "colour"
        ]
      ],
      "raw_glosses": [
        "(chemistry) any substance used to classify another, often by changing colour"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ],
      "wikipedia": [
        "chemical indicator"
      ]
    }
  ],
  "word": "chemical indicator"
}