"polymethylene" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "poly",
        "3": "methylene"
      },
      "expansion": "poly- + methylene",
      "name": "prefix"
    }
  ],
  "etymology_text": "From poly- + methylene.",
  "forms": [
    {
      "form": "polymethylenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "polymethylene (plural polymethylenes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "polyethylene"
    },
    {
      "_dis1": "0 0",
      "word": "polymethene"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
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          "source": "w"
        },
        {
          "_dis": "57 43",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
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          "source": "w+disamb"
        },
        {
          "_dis": "59 41",
          "kind": "other",
          "name": "English terms prefixed with poly-",
          "parents": [],
          "source": "w+disamb"
        },
        {
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          "parents": [],
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        },
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          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "Any organic compound having a general formula (CH₂)ₙ"
      ],
      "id": "en-polymethylene-en-noun-liOuVIu8",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "organic compound",
          "organic compound"
        ],
        [
          "general formula",
          "general formula"
        ]
      ],
      "raw_glosses": [
        "(obsolete, chemistry) Any organic compound having a general formula (CH₂)ₙ"
      ],
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
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          "kind": "topical",
          "langcode": "en",
          "name": "Chemistry",
          "orig": "en:Chemistry",
          "parents": [
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Any of many organic compounds either having a polymeric structure of repeating -CH₂- groups"
      ],
      "id": "en-polymethylene-en-noun-cBt1cMRD",
      "links": [
        [
          "chemistry",
          "chemistry"
        ],
        [
          "polymeric",
          "polymeric"
        ]
      ],
      "raw_glosses": [
        "(chemistry, in combination) Any of many organic compounds either having a polymeric structure of repeating -CH₂- groups"
      ],
      "tags": [
        "in-compounds"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "polymethylene"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English terms prefixed with poly-",
    "Pages with 1 entry",
    "Pages with entries"
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  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "poly",
        "3": "methylene"
      },
      "expansion": "poly- + methylene",
      "name": "prefix"
    }
  ],
  "etymology_text": "From poly- + methylene.",
  "forms": [
    {
      "form": "polymethylenes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "polymethylene (plural polymethylenes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "polyethylene"
    },
    {
      "word": "polymethene"
    }
  ],
  "senses": [
    {
      "categories": [
        "English terms with obsolete senses",
        "en:Chemistry"
      ],
      "glosses": [
        "Any organic compound having a general formula (CH₂)ₙ"
      ],
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        [
          "chemistry",
          "chemistry"
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        [
          "organic compound",
          "organic compound"
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        ]
      ],
      "raw_glosses": [
        "(obsolete, chemistry) Any organic compound having a general formula (CH₂)ₙ"
      ],
      "tags": [
        "obsolete"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    },
    {
      "categories": [
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      ],
      "glosses": [
        "Any of many organic compounds either having a polymeric structure of repeating -CH₂- groups"
      ],
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        [
          "chemistry",
          "chemistry"
        ],
        [
          "polymeric",
          "polymeric"
        ]
      ],
      "raw_glosses": [
        "(chemistry, in combination) Any of many organic compounds either having a polymeric structure of repeating -CH₂- groups"
      ],
      "tags": [
        "in-compounds"
      ],
      "topics": [
        "chemistry",
        "natural-sciences",
        "physical-sciences"
      ]
    }
  ],
  "word": "polymethylene"
}