"ketene" meaning in English

{
  "forms": [
    {
      "form": "ketenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ketene (plural ketenes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic chemistry",
          "orig": "en:Organic chemistry",
          "parents": [
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides"
      ],
      "id": "en-ketene-en-noun-Q8lZbJzc",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "class",
          "class"
        ],
        [
          "unsaturated",
          "unsaturated"
        ],
        [
          "ketone",
          "ketone"
        ],
        [
          "general formula",
          "general formula"
        ],
        [
          "acid anhydride",
          "acid anhydride"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "translations": [
        {
          "_dis1": "76 24",
          "code": "es",
          "lang": "Spanish",
          "sense": "of a class of unsaturated ketones",
          "word": "queteno"
        }
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic compounds",
          "orig": "en:Organic compounds",
          "parents": [
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "45 55",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "the parent compound of this class, CH₂=C=O, an unstable, reactive colourless gas"
      ],
      "id": "en-ketene-en-noun-plZFV6RL",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "parent compound",
          "parent compound"
        ],
        [
          "unstable",
          "unstable"
        ],
        [
          "reactive",
          "reactive"
        ],
        [
          "colourless",
          "colourless"
        ],
        [
          "gas",
          "gas"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) the parent compound of this class, CH₂=C=O, an unstable, reactive colourless gas"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "wikipedia": [
    "ketene"
  ],
  "word": "ketene"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns"
  ],
  "forms": [
    {
      "form": "ketenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "ketene (plural ketenes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "en:Organic chemistry"
      ],
      "glosses": [
        "any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides"
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "class",
          "class"
        ],
        [
          "unsaturated",
          "unsaturated"
        ],
        [
          "ketone",
          "ketone"
        ],
        [
          "general formula",
          "general formula"
        ],
        [
          "acid anhydride",
          "acid anhydride"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) any of a class of unsaturated ketones, having a general formula R₁R₂C=C=O, that react as if they were inner acid anhydrides"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    },
    {
      "categories": [
        "en:Organic compounds"
      ],
      "glosses": [
        "the parent compound of this class, CH₂=C=O, an unstable, reactive colourless gas"
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "parent compound",
          "parent compound"
        ],
        [
          "unstable",
          "unstable"
        ],
        [
          "reactive",
          "reactive"
        ],
        [
          "colourless",
          "colourless"
        ],
        [
          "gas",
          "gas"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) the parent compound of this class, CH₂=C=O, an unstable, reactive colourless gas"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "of a class of unsaturated ketones",
      "word": "queteno"
    }
  ],
  "wikipedia": [
    "ketene"
  ],
  "word": "ketene"
}