"cumulene" meaning in English

{
  "forms": [
    {
      "form": "cumulenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cumulene (plural cumulenes)",
      "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"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with topic categories using raw markup",
          "parents": [
            "Entries with topic categories using raw markup",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Catalan translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Terms with Finnish translations",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Carbon",
          "orig": "en:Carbon",
          "parents": [
            "Carbon group elements",
            "Chemical elements",
            "Matter",
            "Chemistry",
            "Nature",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Organic chemistry",
          "orig": "en:Organic chemistry",
          "parents": [
            "Chemistry",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any hydrocarbon (or derivative) having three or more cumulative double bonds; e.g., R₂C=C=C=CR₂."
      ],
      "id": "en-cumulene-en-noun-9S21-moF",
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "hydrocarbon",
          "hydrocarbon"
        ],
        [
          "derivative",
          "derivative"
        ],
        [
          "cumulative",
          "cumulative"
        ],
        [
          "double bond",
          "double bond"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Any hydrocarbon (or derivative) having three or more cumulative double bonds; e.g., R₂C=C=C=CR₂."
      ],
      "related": [
        {
          "word": "allene"
        },
        {
          "word": "heterocumulene"
        }
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "translations": [
        {
          "code": "ca",
          "lang": "Catalan",
          "sense": "hydrocarbon",
          "tags": [
            "masculine"
          ],
          "word": "cumulè"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "hydrocarbon",
          "word": "kumuleeni"
        }
      ],
      "wikipedia": [
        "cumulene"
      ]
    }
  ],
  "word": "cumulene"
}

{
  "forms": [
    {
      "form": "cumulenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "cumulene (plural cumulenes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "allene"
    },
    {
      "word": "heterocumulene"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English entries with topic categories using raw markup",
        "English lemmas",
        "English nouns",
        "Terms with Catalan translations",
        "Terms with Finnish translations",
        "en:Carbon",
        "en:Organic chemistry"
      ],
      "glosses": [
        "Any hydrocarbon (or derivative) having three or more cumulative double bonds; e.g., R₂C=C=C=CR₂."
      ],
      "links": [
        [
          "organic chemistry",
          "organic chemistry"
        ],
        [
          "hydrocarbon",
          "hydrocarbon"
        ],
        [
          "derivative",
          "derivative"
        ],
        [
          "cumulative",
          "cumulative"
        ],
        [
          "double bond",
          "double bond"
        ]
      ],
      "raw_glosses": [
        "(organic chemistry) Any hydrocarbon (or derivative) having three or more cumulative double bonds; e.g., R₂C=C=C=CR₂."
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "organic-chemistry",
        "physical-sciences"
      ],
      "wikipedia": [
        "cumulene"
      ]
    }
  ],
  "translations": [
    {
      "code": "ca",
      "lang": "Catalan",
      "sense": "hydrocarbon",
      "tags": [
        "masculine"
      ],
      "word": "cumulè"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "hydrocarbon",
      "word": "kumuleeni"
    }
  ],
  "word": "cumulene"
}