"litmus test" meaning in Anglais

{
  "categories": [
    {
      "kind": "other",
      "name": "Locutions nominales en anglais",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Anglais",
      "orig": "anglais",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "De litmus « papier tournesol »."
  ],
  "forms": [
    {
      "form": "litmus tests",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Lexique en anglais de la chimie",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Test effectué avec du papier tournesol."
      ],
      "id": "fr-litmus_test-en-noun-kfCEqIXr",
      "topics": [
        "chemistry"
      ]
    },
    {
      "categories": [
        {
          "kind": "other",
          "name": "Exemples en anglais",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Exemples en anglais à traduire",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Métaphores en anglais",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "Brexit: Why is the customs union so important?, BBC, 2018-04-23",
          "text": "So it's not surprising that customs and the Irish border have now become a litmus test of how successful the Brexit negotiations may prove to be over the coming months."
        }
      ],
      "glosses": [
        "Test binaire donnant un résultat décisif sur la base d'un seul indicateur."
      ],
      "id": "fr-litmus_test-en-noun-Vxr4ovAO",
      "tags": [
        "figuratively"
      ]
    }
  ],
  "word": "litmus test"
}

{
  "categories": [
    "Locutions nominales en anglais",
    "anglais"
  ],
  "etymology_texts": [
    "De litmus « papier tournesol »."
  ],
  "forms": [
    {
      "form": "litmus tests",
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Anglais",
  "lang_code": "en",
  "pos": "noun",
  "pos_title": "Locution nominale",
  "senses": [
    {
      "categories": [
        "Lexique en anglais de la chimie"
      ],
      "glosses": [
        "Test effectué avec du papier tournesol."
      ],
      "topics": [
        "chemistry"
      ]
    },
    {
      "categories": [
        "Exemples en anglais",
        "Exemples en anglais à traduire",
        "Métaphores en anglais"
      ],
      "examples": [
        {
          "ref": "Brexit: Why is the customs union so important?, BBC, 2018-04-23",
          "text": "So it's not surprising that customs and the Irish border have now become a litmus test of how successful the Brexit negotiations may prove to be over the coming months."
        }
      ],
      "glosses": [
        "Test binaire donnant un résultat décisif sur la base d'un seul indicateur."
      ],
      "tags": [
        "figuratively"
      ]
    }
  ],
  "word": "litmus test"
}