"atropisomerism" meaning in English

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  "etymology_text": "atropo- + isomerism",
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  "lang_code": "en",
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        "isomerism as a result of restricted rotation about a single bond"
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        "(physical chemistry) isomerism as a result of restricted rotation about a single bond"
      ],
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        {
          "word": "atropisomer"
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        "physical",
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        "chemistry",
        "natural-sciences",
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  ],
  "word": "atropisomerism"
}

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  "etymology_text": "atropo- + isomerism",
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      "word": "atropisomer"
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  "word": "atropisomerism"
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