"sero" meaning in Welsh

{
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "numeral"
      },
      "expansion": "sero",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "num",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "name": "Welsh cardinal numbers",
          "parents": [
            "Cardinal numbers",
            "Numbers",
            "All topics",
            "Terms by semantic function",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "zero"
      ],
      "id": "en-sero-cy-num--RlOc~np",
      "links": [
        [
          "cardinal number",
          "cardinal number"
        ],
        [
          "zero",
          "zero"
        ]
      ],
      "raw_glosses": [
        "(cardinal number) zero"
      ],
      "tags": [
        "cardinal",
        "numeral"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɛrɔ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈzeːrɔ/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈzɛrɔ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sero"
}

{
  "forms": [
    {
      "form": "seroau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "seroau"
      },
      "expansion": "sero m (plural seroau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "_dis": "90 10",
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "97 3",
          "kind": "other",
          "name": "Welsh links with redundant alt parameters",
          "parents": [
            "Links with redundant alt parameters",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        }
      ],
      "derived": [
        {
          "english": "nonzero",
          "word": "ansero"
        }
      ],
      "glosses": [
        "zero"
      ],
      "id": "en-sero-cy-noun--RlOc~np",
      "links": [
        [
          "zero",
          "zero"
        ]
      ],
      "synonyms": [
        {
          "word": "dim"
        }
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɛrɔ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈzeːrɔ/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈzɛrɔ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sero"
}

{
  "categories": [
    "Pages with 12 entries",
    "Pages with entries",
    "Welsh countable nouns",
    "Welsh entries with incorrect language header",
    "Welsh lemmas",
    "Welsh links with redundant alt parameters",
    "Welsh masculine nouns",
    "Welsh non-mutable terms",
    "Welsh nouns",
    "Welsh numerals"
  ],
  "head_templates": [
    {
      "args": {
        "1": "cy",
        "2": "numeral"
      },
      "expansion": "sero",
      "name": "head"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "num",
  "senses": [
    {
      "categories": [
        "Welsh cardinal numbers"
      ],
      "glosses": [
        "zero"
      ],
      "links": [
        [
          "cardinal number",
          "cardinal number"
        ],
        [
          "zero",
          "zero"
        ]
      ],
      "raw_glosses": [
        "(cardinal number) zero"
      ],
      "tags": [
        "cardinal",
        "numeral"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɛrɔ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈzeːrɔ/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈzɛrɔ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sero"
}

{
  "categories": [
    "Pages with 12 entries",
    "Pages with entries",
    "Welsh countable nouns",
    "Welsh entries with incorrect language header",
    "Welsh lemmas",
    "Welsh links with redundant alt parameters",
    "Welsh masculine nouns",
    "Welsh non-mutable terms",
    "Welsh nouns",
    "Welsh numerals"
  ],
  "derived": [
    {
      "english": "nonzero",
      "word": "ansero"
    }
  ],
  "forms": [
    {
      "form": "seroau",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "seroau"
      },
      "expansion": "sero m (plural seroau, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "glosses": [
        "zero"
      ],
      "links": [
        [
          "zero",
          "zero"
        ]
      ],
      "synonyms": [
        {
          "word": "dim"
        }
      ],
      "tags": [
        "masculine",
        "not-mutable"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈsɛrɔ/",
      "tags": [
        "North-Wales"
      ]
    },
    {
      "ipa": "/ˈzeːrɔ/",
      "tags": [
        "South-Wales"
      ]
    },
    {
      "ipa": "/ˈzɛrɔ/",
      "tags": [
        "South-Wales"
      ]
    }
  ],
  "word": "sero"
}