"Prussian red" meaning in English

{
  "etymology_text": "Discovered by Prussian chemist Leopold Gmelin.",
  "forms": [
    {
      "form": "Prussian reds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Prussian red (countable and uncountable, plural Prussian reds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "17 41 42",
      "word": "Prussian blue"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [],
          "source": "w"
        },
        {
          "_dis": "4 80 16",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "9 87 4",
          "kind": "other",
          "name": "Entries with translation boxes",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "6 92 2",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "4 94 2",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "7 83 10",
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "7 83 10",
          "kind": "other",
          "name": "Terms with German translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "4 89 6",
          "kind": "other",
          "name": "Terms with Hungarian translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "7 84 9",
          "kind": "other",
          "name": "Terms with Polish translations",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "10 87 3",
          "kind": "other",
          "langcode": "en",
          "name": "Pigments",
          "orig": "en:Pigments",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "20 63 17",
          "kind": "other",
          "langcode": "en",
          "name": "Reds",
          "orig": "en:Reds",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Potassium ferricyanide, K₃[Fe(CN)₆], a highly poisonous ferric crystal salt of potassium cyanide used as a pigment."
      ],
      "id": "en-Prussian_red-en-noun-kBfBB3E7",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "Potassium",
          "potassium"
        ],
        [
          "ferricyanide",
          "ferricyanide"
        ],
        [
          "ferric",
          "ferric"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "potassium cyanide",
          "potassium cyanide"
        ],
        [
          "pigment",
          "pigment"
        ]
      ],
      "raw_glosses": [
        "(chemistry) Potassium ferricyanide, K₃[Fe(CN)₆], a highly poisonous ferric crystal salt of potassium cyanide used as a pigment."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ],
      "translations": [
        {
          "_dis1": "87 13",
          "code": "fi",
          "lang": "Finnish",
          "lang_code": "fi",
          "sense": "pigment",
          "word": "preussinpunainen"
        },
        {
          "_dis1": "87 13",
          "code": "de",
          "lang": "German",
          "lang_code": "de",
          "sense": "pigment",
          "tags": [
            "neuter"
          ],
          "word": "Preußisch Rot"
        }
      ]
    },
    {
      "glosses": [
        "The colour of this compound: a hue of semi-dark brownish red"
      ],
      "id": "en-Prussian_red-en-noun-Wu7YgDJN",
      "links": [
        [
          "colour",
          "colour"
        ],
        [
          "red",
          "red"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "translations": [
        {
          "_dis1": "0 100",
          "code": "fi",
          "lang": "Finnish",
          "lang_code": "fi",
          "sense": "colour",
          "word": "preussinpunainen"
        },
        {
          "_dis1": "0 100",
          "code": "de",
          "lang": "German",
          "lang_code": "de",
          "sense": "colour",
          "tags": [
            "neuter"
          ],
          "word": "Preußisch Rot"
        },
        {
          "_dis1": "0 100",
          "code": "pl",
          "lang": "Polish",
          "lang_code": "pl",
          "sense": "colour",
          "tags": [
            "feminine"
          ],
          "word": "pruska czerwień"
        }
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛd"
    }
  ],
  "word": "Prussian red"
}

{
  "etymology_text": "Discovered by Prussian chemist Leopold Gmelin.",
  "forms": [
    {
      "form": "more Prussian red",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most Prussian red",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Prussian red (comparative more Prussian red, superlative most Prussian red)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "_dis1": "17 41 42",
      "word": "Prussian blue"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Of a brownish hue of red colour."
      ],
      "id": "en-Prussian_red-en-adj-sl0UL~Zr",
      "links": [
        [
          "Of",
          "of"
        ],
        [
          "hue",
          "hue"
        ]
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "lang_code": "fi",
          "sense": "of a hue of red",
          "word": "preussinpunainen"
        },
        {
          "code": "hu",
          "lang": "Hungarian",
          "lang_code": "hu",
          "sense": "of a hue of red",
          "word": "poroszvörös"
        }
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛd"
    }
  ],
  "word": "Prussian red"
}

{
  "categories": [
    "English adjectives",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English terms derived from toponyms",
    "English uncountable nouns",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Rhymes:English/ɛd",
    "Rhymes:English/ɛd/3 syllables",
    "Terms with Finnish translations",
    "Terms with German translations",
    "Terms with Hungarian translations",
    "Terms with Polish translations",
    "en:Pigments",
    "en:Reds"
  ],
  "etymology_text": "Discovered by Prussian chemist Leopold Gmelin.",
  "forms": [
    {
      "form": "Prussian reds",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "Prussian red (countable and uncountable, plural Prussian reds)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "Prussian blue"
    }
  ],
  "senses": [
    {
      "categories": [
        "en:Chemistry"
      ],
      "glosses": [
        "Potassium ferricyanide, K₃[Fe(CN)₆], a highly poisonous ferric crystal salt of potassium cyanide used as a pigment."
      ],
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "Potassium",
          "potassium"
        ],
        [
          "ferricyanide",
          "ferricyanide"
        ],
        [
          "ferric",
          "ferric"
        ],
        [
          "salt",
          "salt"
        ],
        [
          "potassium cyanide",
          "potassium cyanide"
        ],
        [
          "pigment",
          "pigment"
        ]
      ],
      "raw_glosses": [
        "(chemistry) Potassium ferricyanide, K₃[Fe(CN)₆], a highly poisonous ferric crystal salt of potassium cyanide used as a pigment."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "glosses": [
        "The colour of this compound: a hue of semi-dark brownish red"
      ],
      "links": [
        [
          "colour",
          "colour"
        ],
        [
          "red",
          "red"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛd"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "lang_code": "fi",
      "sense": "pigment",
      "word": "preussinpunainen"
    },
    {
      "code": "de",
      "lang": "German",
      "lang_code": "de",
      "sense": "pigment",
      "tags": [
        "neuter"
      ],
      "word": "Preußisch Rot"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "lang_code": "fi",
      "sense": "colour",
      "word": "preussinpunainen"
    },
    {
      "code": "de",
      "lang": "German",
      "lang_code": "de",
      "sense": "colour",
      "tags": [
        "neuter"
      ],
      "word": "Preußisch Rot"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "lang_code": "pl",
      "sense": "colour",
      "tags": [
        "feminine"
      ],
      "word": "pruska czerwień"
    }
  ],
  "word": "Prussian red"
}

{
  "categories": [
    "English adjectives",
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English terms derived from toponyms",
    "English uncountable nouns",
    "Entries with translation boxes",
    "Pages with 1 entry",
    "Pages with entries",
    "Rhymes:English/ɛd",
    "Rhymes:English/ɛd/3 syllables",
    "Terms with Finnish translations",
    "Terms with German translations",
    "Terms with Hungarian translations",
    "Terms with Polish translations",
    "en:Pigments",
    "en:Reds"
  ],
  "etymology_text": "Discovered by Prussian chemist Leopold Gmelin.",
  "forms": [
    {
      "form": "more Prussian red",
      "tags": [
        "comparative"
      ]
    },
    {
      "form": "most Prussian red",
      "tags": [
        "superlative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "Prussian red (comparative more Prussian red, superlative most Prussian red)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "related": [
    {
      "word": "Prussian blue"
    }
  ],
  "senses": [
    {
      "glosses": [
        "Of a brownish hue of red colour."
      ],
      "links": [
        [
          "Of",
          "of"
        ],
        [
          "hue",
          "hue"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛd"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "lang_code": "fi",
      "sense": "of a hue of red",
      "word": "preussinpunainen"
    },
    {
      "code": "hu",
      "lang": "Hungarian",
      "lang_code": "hu",
      "sense": "of a hue of red",
      "word": "poroszvörös"
    }
  ],
  "word": "Prussian red"
}