"materia subtilis" meaning in English

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      "expansion": "materia subtilis (uncountable)",
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  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "An ethereal substance once believed to fill spaces emptied of air (i.e. any vacuum) and to be capable of passing through solid objects."
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        "(historical) An ethereal substance once believed to fill spaces emptied of air (i.e. any vacuum) and to be capable of passing through solid objects."
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  "word": "materia subtilis"
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        "(historical) An ethereal substance once believed to fill spaces emptied of air (i.e. any vacuum) and to be capable of passing through solid objects."
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  "word": "materia subtilis"
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