"premelting" meaning in English

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      "expansion": "pre- + melting",
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  "etymology_text": "From pre- + melting.",
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      "expansion": "premelting (uncountable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      ],
      "glosses": [
        "The formation of a quasi-liquid film on the surface of crystal below its melting point"
      ],
      "id": "en-premelting-en-noun-NQewVcV6",
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          "crystal",
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          "melting point",
          "melting point"
        ]
      ],
      "raw_glosses": [
        "(physics) The formation of a quasi-liquid film on the surface of crystal below its melting point"
      ],
      "tags": [
        "uncountable"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
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      "wikipedia": [
        "premelting"
      ]
    }
  ],
  "word": "premelting"
}

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        "2": "pre",
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      "expansion": "pre- + melting",
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  ],
  "etymology_text": "From pre- + melting.",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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        "The formation of a quasi-liquid film on the surface of crystal below its melting point"
      ],
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          "physics"
        ],
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        "(physics) The formation of a quasi-liquid film on the surface of crystal below its melting point"
      ],
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        "natural-sciences",
        "physical-sciences",
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  "word": "premelting"
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