"silicon steel" meaning in English

{
  "forms": [
    {
      "form": "silicon steels",
      "tags": [
        "plural"
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      "expansion": "silicon steel (countable and uncountable, plural silicon steels)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Alloys",
          "orig": "en:Alloys",
          "parents": [
            "Metals",
            "Matter",
            "Metallurgy",
            "Chemistry",
            "Nature",
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      ],
      "glosses": [
        "An alloy of iron and silicon that has important magnetic properties."
      ],
      "id": "en-silicon_steel-en-noun-QOuAhdqJ",
      "links": [
        [
          "alloy",
          "alloy"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "silicon",
          "silicon"
        ],
        [
          "magnetic",
          "magnetic"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "guīgāng",
          "sense": "alloy of steel and silicon",
          "word": "硅鋼 /硅钢"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "alloy of steel and silicon",
          "word": "piiteräs"
        },
        {
          "alt": "けいそこう",
          "code": "ja",
          "lang": "Japanese",
          "roman": "keisokō",
          "sense": "alloy of steel and silicon",
          "word": "珪素鋼"
        }
      ],
      "wikipedia": [
        "silicon steel"
      ]
    }
  ],
  "word": "silicon steel"
}

{
  "forms": [
    {
      "form": "silicon steels",
      "tags": [
        "plural"
      ]
    }
  ],
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      "expansion": "silicon steel (countable and uncountable, plural silicon steels)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "An alloy of iron and silicon that has important magnetic properties."
      ],
      "links": [
        [
          "alloy",
          "alloy"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "silicon",
          "silicon"
        ],
        [
          "magnetic",
          "magnetic"
        ]
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "wikipedia": [
        "silicon steel"
      ]
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "guīgāng",
      "sense": "alloy of steel and silicon",
      "word": "硅鋼 /硅钢"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "alloy of steel and silicon",
      "word": "piiteräs"
    },
    {
      "alt": "けいそこう",
      "code": "ja",
      "lang": "Japanese",
      "roman": "keisokō",
      "sense": "alloy of steel and silicon",
      "word": "珪素鋼"
    }
  ],
  "word": "silicon steel"
}