"-isation" meaning in English

{
  "categories": [
    {
      "kind": "other",
      "name": "Terms suffixed with -ation",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "-ise",
        "2": "ation"
      },
      "expansion": "-ise + -ation",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "-ise + -ation",
  "forms": [
    {
      "form": "-isation",
      "raw_tags": [
        "Suffix"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "rational + -isation → rationalisation"
        },
        {
          "text": "crystal + -isation → crystallisation"
        }
      ],
      "glosses": [
        "Words ending with -isation reflect the action, process, result or state of a verb."
      ],
      "id": "simple--isation-en-suffix-edqRzbVP"
    }
  ],
  "sounds": [
    {
      "ipa": "/-ˌaɪˈzeɪʃn̩/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/-əˈzeɪʃ(ə)n/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "-isation"
}

{
  "categories": [
    "Terms suffixed with -ation"
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "-ise",
        "2": "ation"
      },
      "expansion": "-ise + -ation",
      "name": "ety-suffix"
    }
  ],
  "etymology_text": "-ise + -ation",
  "forms": [
    {
      "form": "-isation",
      "raw_tags": [
        "Suffix"
      ]
    }
  ],
  "head_templates": [
    {
      "expansion": "[POS TABLE]",
      "name": "suffix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "suffix",
  "senses": [
    {
      "examples": [
        {
          "text": "rational + -isation → rationalisation"
        },
        {
          "text": "crystal + -isation → crystallisation"
        }
      ],
      "glosses": [
        "Words ending with -isation reflect the action, process, result or state of a verb."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/-ˌaɪˈzeɪʃn̩/",
      "tags": [
        "UK"
      ]
    },
    {
      "ipa": "/-əˈzeɪʃ(ə)n/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "-isation"
}