"subzero" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub-",
        "3": "zero"
      },
      "expansion": "sub- + zero",
      "name": "prefix"
    }
  ],
  "etymology_text": "From sub- + zero.",
  "forms": [
    {
      "form": "sub-zero",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "subzero (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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        {
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          "name": "English terms prefixed with sub-",
          "parents": [],
          "source": "w"
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          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
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          "parents": [],
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        {
          "kind": "other",
          "langcode": "en",
          "name": "Zero",
          "orig": "en:Zero",
          "parents": [],
          "source": "w"
        }
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            [
              48,
              55
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          "ref": "2026 January 24, “January 23, 2026 — Winter storm begins, bringing ice, heavy snow to much of the US”, in CNN, archived from the original on 03 Feb 2026:",
          "text": "More than half of all Americans will experience subzero wind chills in the next week.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Less than zero, most commonly used to refer to temperature."
      ],
      "id": "en-subzero-en-adj-b8Yv4pn7",
      "links": [
        [
          "zero",
          "zero"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɪəɹəʊ"
    }
  ],
  "word": "subzero"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub-",
        "3": "zero"
      },
      "expansion": "sub- + zero",
      "name": "prefix"
    }
  ],
  "etymology_text": "From sub- + zero.",
  "forms": [
    {
      "form": "sub-zero",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "subzero (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
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        "English uncomparable adjectives",
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        "Rhymes:English/ɪəɹəʊ",
        "Rhymes:English/ɪəɹəʊ/3 syllables",
        "en:Zero"
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          ],
          "ref": "2026 January 24, “January 23, 2026 — Winter storm begins, bringing ice, heavy snow to much of the US”, in CNN, archived from the original on 03 Feb 2026:",
          "text": "More than half of all Americans will experience subzero wind chills in the next week.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Less than zero, most commonly used to refer to temperature."
      ],
      "links": [
        [
          "zero",
          "zero"
        ]
      ],
      "tags": [
        "not-comparable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɪəɹəʊ"
    }
  ],
  "word": "subzero"
}