"self-hardening" meaning in English

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  "etymology_text": "self- + hardening",
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      "expansion": "self-hardening (not comparable)",
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  "lang_code": "en",
  "pos": "adj",
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      "glosses": [
        "Designating, or pertaining to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high speed steels."
      ],
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        [
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        ],
        [
          "harden",
          "harden"
        ],
        [
          "quench",
          "quench"
        ],
        [
          "alloy",
          "alloy"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "manganese",
          "manganese"
        ],
        [
          "tungsten",
          "tungsten"
        ],
        [
          "chromium",
          "chromium"
        ],
        [
          "molybdenum",
          "molybdenum"
        ],
        [
          "high speed steel",
          "high speed steel"
        ]
      ],
      "raw_glosses": [
        "(metallurgy) Designating, or pertaining to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high speed steels."
      ],
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        "not-comparable"
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        "engineering",
        "metallurgy",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "self-hardening"
}

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  ],
  "etymology_text": "self- + hardening",
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  "lang_code": "en",
  "pos": "adj",
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      "glosses": [
        "Designating, or pertaining to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high speed steels."
      ],
      "links": [
        [
          "metallurgy",
          "metallurgy"
        ],
        [
          "steel",
          "steel"
        ],
        [
          "harden",
          "harden"
        ],
        [
          "quench",
          "quench"
        ],
        [
          "alloy",
          "alloy"
        ],
        [
          "iron",
          "iron"
        ],
        [
          "carbon",
          "carbon"
        ],
        [
          "manganese",
          "manganese"
        ],
        [
          "tungsten",
          "tungsten"
        ],
        [
          "chromium",
          "chromium"
        ],
        [
          "molybdenum",
          "molybdenum"
        ],
        [
          "high speed steel",
          "high speed steel"
        ]
      ],
      "raw_glosses": [
        "(metallurgy) Designating, or pertaining to, any of various steels that harden when heated to above a red heat and cooled in air, usually in a blast of cold air with moderate rapidity, without quenching. Such steels are alloys of iron and carbon with manganese, tungsten and manganese, chromium, molybdenum and manganese, etc. They are chiefly used as high speed steels."
      ],
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  "word": "self-hardening"
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