"quaternionist" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quaternion",
        "3": "ist"
      },
      "expansion": "quaternion + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "quaternion + -ist",
  "forms": [
    {
      "form": "quaternionists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quaternionist (plural quaternionists)",
      "name": "en-noun"
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
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          "source": "w"
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          "name": "English terms suffixed with -ist",
          "parents": [],
          "source": "w"
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      "examples": [
        {
          "ref": "1893, Electromagnetic theory: Volume 1, D. Van Nostrand Company, page 138",
          "text": "Now I can imagine a quaternionist (unless prejudiced) admitting the simplicity of establishment and of operation, and the convenience of the notation, and its sufficiency for practical requirements up to a certain point; and yet adding the inquiry whether there is not, over and above this vector analysis, a theory of Quaternions which is overlooked.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who studies or promotes the use of quaternions."
      ],
      "id": "en-quaternionist-en-noun-lFXISzTD"
    }
  ],
  "word": "quaternionist"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "quaternion",
        "3": "ist"
      },
      "expansion": "quaternion + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "quaternion + -ist",
  "forms": [
    {
      "form": "quaternionists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "quaternionist (plural quaternionists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        "English countable nouns",
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        "English terms suffixed with -ist",
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      "examples": [
        {
          "ref": "1893, Electromagnetic theory: Volume 1, D. Van Nostrand Company, page 138",
          "text": "Now I can imagine a quaternionist (unless prejudiced) admitting the simplicity of establishment and of operation, and the convenience of the notation, and its sufficiency for practical requirements up to a certain point; and yet adding the inquiry whether there is not, over and above this vector analysis, a theory of Quaternions which is overlooked.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "One who studies or promotes the use of quaternions."
      ]
    }
  ],
  "word": "quaternionist"
}