"unidad astronómica" meaning in Spanish

{
  "forms": [
    {
      "form": "unidades astronómicas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "unidad astronómica f (plural unidades astronómicas)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "u‧ni‧dad"
  ],
  "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"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "Astronomy",
          "orig": "es:Astronomy",
          "parents": [
            "Sciences",
            "Space",
            "All topics",
            "Nature",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "es",
          "name": "SI units",
          "orig": "es:SI units",
          "parents": [
            "Units of measure",
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "astronomical unit"
      ],
      "id": "en-unidad_astronómica-es-noun-leUpTWZv",
      "links": [
        [
          "astronomical unit",
          "astronomical unit"
        ]
      ],
      "tags": [
        "feminine"
      ],
      "wikipedia": [
        "es:unidad astronómica"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/uniˌdad astɾoˈnomika/"
    },
    {
      "ipa": "[u.niˌð̞að̞ as.t̪ɾoˈno.mi.ka]"
    }
  ],
  "word": "unidad astronómica"
}

{
  "forms": [
    {
      "form": "unidades astronómicas",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "f"
      },
      "expansion": "unidad astronómica f (plural unidades astronómicas)",
      "name": "es-noun"
    }
  ],
  "hyphenation": [
    "u‧ni‧dad"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Spanish countable nouns",
        "Spanish entries with incorrect language header",
        "Spanish feminine nouns",
        "Spanish lemmas",
        "Spanish multiword terms",
        "Spanish nouns",
        "Spanish terms with IPA pronunciation",
        "es:Astronomy",
        "es:SI units"
      ],
      "glosses": [
        "astronomical unit"
      ],
      "links": [
        [
          "astronomical unit",
          "astronomical unit"
        ]
      ],
      "tags": [
        "feminine"
      ],
      "wikipedia": [
        "es:unidad astronómica"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/uniˌdad astɾoˈnomika/"
    },
    {
      "ipa": "[u.niˌð̞að̞ as.t̪ɾoˈno.mi.ka]"
    }
  ],
  "word": "unidad astronómica"
}