"grados" meaning in Spanish

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "noun form",
        "g": "m-p"
      },
      "expansion": "grados m pl",
      "name": "head"
    }
  ],
  "hyphenation": [
    "gra‧dos"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "form_of": [
        {
          "word": "grado"
        }
      ],
      "glosses": [
        "plural of grado"
      ],
      "id": "en-grados-es-noun-wI9pEaan",
      "links": [
        [
          "grado",
          "grado#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɡɾados/"
    },
    {
      "ipa": "[ˈɡɾa.ð̞os]"
    },
    {
      "rhymes": "-ados"
    }
  ],
  "word": "grados"
}

{
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "noun form",
        "g": "m-p"
      },
      "expansion": "grados m pl",
      "name": "head"
    }
  ],
  "hyphenation": [
    "gra‧dos"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Spanish/ados",
        "Rhymes:Spanish/ados/2 syllables",
        "Spanish 2-syllable words",
        "Spanish entries with incorrect language header",
        "Spanish non-lemma forms",
        "Spanish noun forms",
        "Spanish terms with IPA pronunciation"
      ],
      "form_of": [
        {
          "word": "grado"
        }
      ],
      "glosses": [
        "plural of grado"
      ],
      "links": [
        [
          "grado",
          "grado#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "masculine",
        "plural"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈɡɾados/"
    },
    {
      "ipa": "[ˈɡɾa.ð̞os]"
    },
    {
      "rhymes": "-ados"
    }
  ],
  "word": "grados"
}