"extemporisation" meaning in English

{
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        "2": "extemporise",
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      "expansion": "extemporise + -ation",
      "name": "af"
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  ],
  "etymology_text": "From extemporise + -ation.",
  "forms": [
    {
      "form": "extemporisations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "extemporisation (countable and uncountable, plural extemporisations)",
      "name": "en-noun"
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "extemporization"
        }
      ],
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        {
          "ref": "1961 June, “Motive Power Miscellany: Southern Region”, in Trains Illustrated, page 380:",
          "text": "After the collision between a suburban electric and a 4-6-2 outside Waterloo at the peak evening period on April 11, a swift extemporisation of many Western Section services was necessary.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Alternative spelling of extemporization."
      ],
      "id": "en-extemporisation-en-noun-3qSmZiea",
      "links": [
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          "extemporization",
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      "raw_glosses": [
        "(British spelling) Alternative spelling of extemporization."
      ],
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        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-eɪʃən"
    }
  ],
  "word": "extemporisation"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "extemporise",
        "3": "-ation"
      },
      "expansion": "extemporise + -ation",
      "name": "af"
    }
  ],
  "etymology_text": "From extemporise + -ation.",
  "forms": [
    {
      "form": "extemporisations",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "extemporisation (countable and uncountable, plural extemporisations)",
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  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "word": "extemporization"
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        "Rhymes:English/eɪʃən/6 syllables"
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        {
          "ref": "1961 June, “Motive Power Miscellany: Southern Region”, in Trains Illustrated, page 380:",
          "text": "After the collision between a suburban electric and a 4-6-2 outside Waterloo at the peak evening period on April 11, a swift extemporisation of many Western Section services was necessary.",
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        }
      ],
      "glosses": [
        "Alternative spelling of extemporization."
      ],
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        "(British spelling) Alternative spelling of extemporization."
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  ],
  "sounds": [
    {
      "rhymes": "-eɪʃən"
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  ],
  "word": "extemporisation"
}