"philosopher of fire" meaning in English

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  "etymology_text": "A calque of Latin philosophus per ignem (“philosopher by fire”). Doublet of fire philosopher and philosopher by fire.",
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      "glosses": [
        "Synonym of alchemist"
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        "(obsolete) Synonym of alchemist"
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          "word": "alchemist"
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  "word": "philosopher of fire"
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        "3": "philosopher by fire"
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  ],
  "etymology_text": "A calque of Latin philosophus per ignem (“philosopher by fire”). Doublet of fire philosopher and philosopher by fire.",
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        "Synonym of alchemist"
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  "word": "philosopher of fire"
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