"preignition" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "ignition"
      },
      "expansion": "pre- + ignition",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pre- + ignition.",
  "forms": [
    {
      "form": "preignitions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "preignition (plural preignitions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
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          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with pre-",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
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          "source": "w"
        },
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          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with French translations",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Terms with Greek translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Italian translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Automotive",
          "orig": "en:Automotive",
          "parents": [
            "Transport",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The premature detonation of a fuel charge in Four-stroke cycle engines."
      ],
      "id": "en-preignition-en-noun-JLWkd8bx",
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "detonation",
          "detonation"
        ]
      ],
      "raw_glosses": [
        "(automotive) The premature detonation of a fuel charge in Four-stroke cycle engines."
      ],
      "synonyms": [
        {
          "word": "pinking"
        },
        {
          "word": "pinging"
        },
        {
          "word": "knocking"
        }
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ],
      "translations": [
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "premature detonation in four-stroke cycle engines",
          "word": "aikainen sytytys"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "premature detonation in four-stroke cycle engines",
          "tags": [
            "masculine"
          ],
          "word": "autoallumage"
        },
        {
          "code": "el",
          "lang": "Greek",
          "roman": "proanáflexi",
          "sense": "premature detonation in four-stroke cycle engines",
          "tags": [
            "feminine"
          ],
          "word": "προανάφλεξη"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "premature detonation in four-stroke cycle engines",
          "tags": [
            "feminine"
          ],
          "word": "preaccensione"
        }
      ]
    }
  ],
  "word": "preignition"
}

{
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    {
      "args": {
        "1": "en",
        "2": "pre",
        "3": "ignition"
      },
      "expansion": "pre- + ignition",
      "name": "prefix"
    }
  ],
  "etymology_text": "From pre- + ignition.",
  "forms": [
    {
      "form": "preignitions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "preignition (plural preignitions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
        "English entries with incorrect language header",
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        "English nouns",
        "English terms prefixed with pre-",
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        "Terms with French translations",
        "Terms with Greek translations",
        "Terms with Italian translations",
        "en:Automotive"
      ],
      "glosses": [
        "The premature detonation of a fuel charge in Four-stroke cycle engines."
      ],
      "links": [
        [
          "automotive",
          "automotive"
        ],
        [
          "detonation",
          "detonation"
        ]
      ],
      "raw_glosses": [
        "(automotive) The premature detonation of a fuel charge in Four-stroke cycle engines."
      ],
      "topics": [
        "automotive",
        "transport",
        "vehicles"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "pinking"
    },
    {
      "word": "pinging"
    },
    {
      "word": "knocking"
    }
  ],
  "translations": [
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "premature detonation in four-stroke cycle engines",
      "word": "aikainen sytytys"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "premature detonation in four-stroke cycle engines",
      "tags": [
        "masculine"
      ],
      "word": "autoallumage"
    },
    {
      "code": "el",
      "lang": "Greek",
      "roman": "proanáflexi",
      "sense": "premature detonation in four-stroke cycle engines",
      "tags": [
        "feminine"
      ],
      "word": "προανάφλεξη"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "premature detonation in four-stroke cycle engines",
      "tags": [
        "feminine"
      ],
      "word": "preaccensione"
    }
  ],
  "word": "preignition"
}