"heptone" meaning in English

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  "etymology_text": "Ancient Greek [Term?]",
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      "form": "heptones",
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  "lang_code": "en",
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      "glosses": [
        "A liquid hydrocarbon, C₇H₁₀, of the valylene series."
      ],
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        [
          "valylene",
          "valylene"
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        "(organic chemistry) A liquid hydrocarbon, C₇H₁₀, of the valylene series."
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  "word": "heptone"
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  "etymology_text": "Ancient Greek [Term?]",
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        "A liquid hydrocarbon, C₇H₁₀, of the valylene series."
      ],
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        "(organic chemistry) A liquid hydrocarbon, C₇H₁₀, of the valylene series."
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