"hydrodynamicist" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hydrodynamic",
        "3": "ist"
      },
      "expansion": "hydrodynamic + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From hydrodynamic + -ist.",
  "forms": [
    {
      "form": "hydrodynamicists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hydrodynamicist (plural hydrodynamicists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
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        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "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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        {
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          "langcode": "en",
          "name": "Physicists",
          "orig": "en:Physicists",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "One who studies hydrodynamics."
      ],
      "id": "en-hydrodynamicist-en-noun-uWY4GXkk",
      "links": [
        [
          "hydrodynamics",
          "hydrodynamics"
        ]
      ],
      "translations": [
        {
          "code": "uk",
          "lang": "Ukrainian",
          "roman": "hidrodynámik",
          "sense": "one who studies hydrodynamics",
          "tags": [
            "masculine"
          ],
          "word": "гідродина́мік"
        }
      ]
    }
  ],
  "word": "hydrodynamicist"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "hydrodynamic",
        "3": "ist"
      },
      "expansion": "hydrodynamic + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From hydrodynamic + -ist.",
  "forms": [
    {
      "form": "hydrodynamicists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "hydrodynamicist (plural hydrodynamicists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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      "glosses": [
        "One who studies hydrodynamics."
      ],
      "links": [
        [
          "hydrodynamics",
          "hydrodynamics"
        ]
      ]
    }
  ],
  "translations": [
    {
      "code": "uk",
      "lang": "Ukrainian",
      "roman": "hidrodynámik",
      "sense": "one who studies hydrodynamics",
      "tags": [
        "masculine"
      ],
      "word": "гідродина́мік"
    }
  ],
  "word": "hydrodynamicist"
}