"petroleum ether" meaning in English

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  "lang_code": "en",
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        {
          "kind": "topical",
          "langcode": "en",
          "name": "Petroleum",
          "orig": "en:Petroleum",
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      "glosses": [
        "A volatile petroleum fraction, usually available in a number of fractions boiling between 40°C and 140°C. Used as a solvent in the laboratory and industry."
      ],
      "id": "en-petroleum_ether-en-noun-cC6ZYZmx",
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          "volatile",
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        [
          "petroleum",
          "petroleum"
        ],
        [
          "fraction",
          "fraction"
        ]
      ],
      "synonyms": [
        {
          "word": "ligroin"
        },
        {
          "word": "petroleum spirit"
        },
        {
          "word": "petroleum spirits"
        }
      ],
      "translations": [
        {
          "code": "cmn",
          "lang": "Chinese Mandarin",
          "roman": "shíyóumí",
          "sense": "petroleum fraction",
          "word": "石油醚"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "petroleum fraction",
          "word": "liuotinbensiini"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "petroleum fraction",
          "tags": [
            "masculine"
          ],
          "word": "éther de pétrole"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "petroleum fraction",
          "tags": [
            "masculine"
          ],
          "word": "Petrolether"
        },
        {
          "code": "ja",
          "lang": "Japanese",
          "roman": "sekiyu ēteru",
          "sense": "petroleum fraction",
          "word": "石油エーテル"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "petroléjnyj efír",
          "sense": "petroleum fraction",
          "tags": [
            "masculine"
          ],
          "word": "петроле́йный эфи́р"
        }
      ]
    }
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  "word": "petroleum ether"
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      "glosses": [
        "A volatile petroleum fraction, usually available in a number of fractions boiling between 40°C and 140°C. Used as a solvent in the laboratory and industry."
      ],
      "links": [
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          "volatile",
          "volatile"
        ],
        [
          "petroleum",
          "petroleum"
        ],
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          "fraction",
          "fraction"
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      ]
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  "synonyms": [
    {
      "word": "ligroin"
    },
    {
      "word": "petroleum spirit"
    },
    {
      "word": "petroleum spirits"
    }
  ],
  "translations": [
    {
      "code": "cmn",
      "lang": "Chinese Mandarin",
      "roman": "shíyóumí",
      "sense": "petroleum fraction",
      "word": "石油醚"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "petroleum fraction",
      "word": "liuotinbensiini"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "petroleum fraction",
      "tags": [
        "masculine"
      ],
      "word": "éther de pétrole"
    },
    {
      "code": "de",
      "lang": "German",
      "sense": "petroleum fraction",
      "tags": [
        "masculine"
      ],
      "word": "Petrolether"
    },
    {
      "code": "ja",
      "lang": "Japanese",
      "roman": "sekiyu ēteru",
      "sense": "petroleum fraction",
      "word": "石油エーテル"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "petroléjnyj efír",
      "sense": "petroleum fraction",
      "tags": [
        "masculine"
      ],
      "word": "петроле́йный эфи́р"
    }
  ],
  "word": "petroleum ether"
}