"undulationist" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "undulation",
        "3": "ist"
      },
      "expansion": "undulation + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From undulation + -ist.",
  "forms": [
    {
      "form": "undulationists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undulationist (plural undulationists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms suffixed with -ist",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
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      ],
      "examples": [
        {
          "ref": "1833, William Whewell, Address Delivered in the Senate-House at Cambridge:",
          "text": "the undulationist will conceive that his opinions have gained no small accession of evidence by this exemplification of what they will account for",
          "type": "quote"
        }
      ],
      "glosses": [
        "One who believes that light is a wave."
      ],
      "id": "en-undulationist-en-noun-Hu-zmXoN",
      "links": [
        [
          "light",
          "light"
        ],
        [
          "wave",
          "wave"
        ]
      ],
      "raw_glosses": [
        "(archaic) One who believes that light is a wave."
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "undulationist"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "undulation",
        "3": "ist"
      },
      "expansion": "undulation + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From undulation + -ist.",
  "forms": [
    {
      "form": "undulationists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undulationist (plural undulationists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms suffixed with -ist",
        "English terms with archaic senses",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "1833, William Whewell, Address Delivered in the Senate-House at Cambridge:",
          "text": "the undulationist will conceive that his opinions have gained no small accession of evidence by this exemplification of what they will account for",
          "type": "quote"
        }
      ],
      "glosses": [
        "One who believes that light is a wave."
      ],
      "links": [
        [
          "light",
          "light"
        ],
        [
          "wave",
          "wave"
        ]
      ],
      "raw_glosses": [
        "(archaic) One who believes that light is a wave."
      ],
      "tags": [
        "archaic"
      ]
    }
  ],
  "word": "undulationist"
}