"undercool" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "under",
        "3": "cool"
      },
      "expansion": "under- + cool",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + cool",
  "forms": [
    {
      "form": "undercools",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undercooling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undercooled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undercooled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undercool (third-person singular simple present undercools, present participle undercooling, simple past and past participle undercooled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "64 36",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "_dis": "62 38",
          "kind": "other",
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          "source": "w+disamb"
        },
        {
          "_dis": "56 44",
          "kind": "other",
          "name": "English terms prefixed with under-",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To cool insufficiently"
      ],
      "id": "en-undercool-en-verb-zsD9qMZY",
      "links": [
        [
          "cool",
          "cool"
        ]
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Physics",
          "orig": "en:Physics",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "0 100",
          "kind": "topical",
          "langcode": "en",
          "name": "Temperature",
          "orig": "en:Temperature",
          "parents": [
            "Nature",
            "Weather",
            "All topics",
            "Atmosphere",
            "Fundamental"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "To supercool"
      ],
      "id": "en-undercool-en-verb-UAXdbmI7",
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "supercool",
          "supercool"
        ]
      ],
      "raw_glosses": [
        "(physics) To supercool"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "undercool"
}

{
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    "English lemmas",
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    "English verbs",
    "en:Temperature"
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  "etymology_templates": [
    {
      "args": {
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        "2": "under",
        "3": "cool"
      },
      "expansion": "under- + cool",
      "name": "prefix"
    }
  ],
  "etymology_text": "under- + cool",
  "forms": [
    {
      "form": "undercools",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undercooling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undercooled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undercooled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undercool (third-person singular simple present undercools, present participle undercooling, simple past and past participle undercooled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "glosses": [
        "To cool insufficiently"
      ],
      "links": [
        [
          "cool",
          "cool"
        ]
      ]
    },
    {
      "categories": [
        "en:Physics"
      ],
      "glosses": [
        "To supercool"
      ],
      "links": [
        [
          "physics",
          "physics"
        ],
        [
          "supercool",
          "supercool"
        ]
      ],
      "raw_glosses": [
        "(physics) To supercool"
      ],
      "topics": [
        "natural-sciences",
        "physical-sciences",
        "physics"
      ]
    }
  ],
  "word": "undercool"
}