"dietist" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "diet",
        "3": "ist"
      },
      "expansion": "diet + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From diet + -ist.",
  "forms": [
    {
      "form": "dietists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dietist (plural dietists)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "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"
        }
      ],
      "glosses": [
        "A person skilled at formulating diets; a dietitian"
      ],
      "id": "en-dietist-en-noun-4pE3yJGI",
      "links": [
        [
          "diet",
          "diet"
        ],
        [
          "dietitian",
          "dietitian"
        ]
      ]
    }
  ],
  "word": "dietist"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "diet",
        "3": "ist"
      },
      "expansion": "diet + -ist",
      "name": "suffix"
    }
  ],
  "etymology_text": "From diet + -ist.",
  "forms": [
    {
      "form": "dietists",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "dietist (plural dietists)",
      "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",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "glosses": [
        "A person skilled at formulating diets; a dietitian"
      ],
      "links": [
        [
          "diet",
          "diet"
        ],
        [
          "dietitian",
          "dietitian"
        ]
      ]
    }
  ],
  "word": "dietist"
}