"alterna" meaning in Spanish

{
  "etymology_number": 1,
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "adjective form"
      },
      "expansion": "alterna",
      "name": "head"
    }
  ],
  "hyphenation": [
    "al‧ter‧na"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "form_of": [
        {
          "word": "alterno"
        }
      ],
      "glosses": [
        "feminine singular of alterno"
      ],
      "id": "en-alterna-es-adj-e-zJBDnG",
      "links": [
        [
          "alterno",
          "alterno#Spanish"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/alˈteɾna/"
    },
    {
      "ipa": "[al̪ˈt̪eɾ.na]"
    },
    {
      "rhymes": "-eɾna"
    }
  ],
  "word": "alterna"
}

{
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "verb form"
      },
      "expansion": "alterna",
      "name": "head"
    }
  ],
  "hyphenation": [
    "al‧ter‧na"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "_dis": "10 1 12 10 1 0 10 1 7 12 10 1 12 0 10 1",
          "kind": "other",
          "name": "Pages with 9 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "12 1 9 12 1 0 12 1 6 10 12 1 10 0 12 1",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "2 87 11",
          "kind": "other",
          "name": "Spanish entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "form_of": [
        {
          "word": "alternar"
        }
      ],
      "glosses": [
        "inflection of alternar:",
        "third-person singular present indicative"
      ],
      "id": "en-alterna-es-verb-EzYy-5Wp",
      "links": [
        [
          "alternar",
          "alternar#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form_of": [
        {
          "word": "alternar"
        }
      ],
      "glosses": [
        "inflection of alternar:",
        "second-person singular imperative"
      ],
      "id": "en-alterna-es-verb-eHz9gcJF",
      "links": [
        [
          "alternar",
          "alternar#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "imperative",
        "second-person",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/alˈteɾna/"
    },
    {
      "ipa": "[al̪ˈt̪eɾ.na]"
    },
    {
      "rhymes": "-eɾna"
    }
  ],
  "word": "alterna"
}

{
  "categories": [
    "Pages with 9 entries",
    "Pages with entries",
    "Rhymes:Spanish/eɾna",
    "Rhymes:Spanish/eɾna/3 syllables",
    "Spanish 3-syllable words",
    "Spanish adjective forms",
    "Spanish entries with incorrect language header",
    "Spanish non-lemma forms",
    "Spanish terms with IPA pronunciation",
    "Spanish verb forms"
  ],
  "etymology_number": 1,
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "adjective form"
      },
      "expansion": "alterna",
      "name": "head"
    }
  ],
  "hyphenation": [
    "al‧ter‧na"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "adj",
  "senses": [
    {
      "form_of": [
        {
          "word": "alterno"
        }
      ],
      "glosses": [
        "feminine singular of alterno"
      ],
      "links": [
        [
          "alterno",
          "alterno#Spanish"
        ]
      ],
      "tags": [
        "feminine",
        "form-of",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/alˈteɾna/"
    },
    {
      "ipa": "[al̪ˈt̪eɾ.na]"
    },
    {
      "rhymes": "-eɾna"
    }
  ],
  "word": "alterna"
}

{
  "categories": [
    "Pages with 9 entries",
    "Pages with entries",
    "Rhymes:Spanish/eɾna",
    "Rhymes:Spanish/eɾna/3 syllables",
    "Spanish 3-syllable words",
    "Spanish entries with incorrect language header",
    "Spanish non-lemma forms",
    "Spanish terms with IPA pronunciation",
    "Spanish verb forms"
  ],
  "etymology_number": 2,
  "head_templates": [
    {
      "args": {
        "1": "es",
        "2": "verb form"
      },
      "expansion": "alterna",
      "name": "head"
    }
  ],
  "hyphenation": [
    "al‧ter‧na"
  ],
  "lang": "Spanish",
  "lang_code": "es",
  "pos": "verb",
  "senses": [
    {
      "form_of": [
        {
          "word": "alternar"
        }
      ],
      "glosses": [
        "inflection of alternar:",
        "third-person singular present indicative"
      ],
      "links": [
        [
          "alternar",
          "alternar#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "indicative",
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form_of": [
        {
          "word": "alternar"
        }
      ],
      "glosses": [
        "inflection of alternar:",
        "second-person singular imperative"
      ],
      "links": [
        [
          "alternar",
          "alternar#Spanish"
        ]
      ],
      "tags": [
        "form-of",
        "imperative",
        "second-person",
        "singular"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/alˈteɾna/"
    },
    {
      "ipa": "[al̪ˈt̪eɾ.na]"
    },
    {
      "rhymes": "-eɾna"
    }
  ],
  "word": "alterna"
}