"dydd" meaning in Gallois

{
  "categories": [
    {
      "kind": "other",
      "name": "Calendrier en gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en indo-européen commun",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en moyen gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en proto-celtique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en vieux brittonique",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Mots en gallois issus d’un mot en vieux gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Noms communs en gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Gallois",
      "orig": "gallois",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "Étymologies en gallois incluant une reconstruction",
      "parents": [],
      "source": "w"
    }
  ],
  "etymology_texts": [
    "Du moyen gallois dyð, dyd, du vieux gallois did, du vieux brittonique *dið, du proto-celtique *dīyos, de l’indo-européen commun *dyḗws.",
    "Apparenté breton deiz."
  ],
  "forms": [
    {
      "form": "dyddiau",
      "tags": [
        "plural",
        "unmutated"
      ]
    },
    {
      "form": "ddydd",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "singular"
      ]
    },
    {
      "form": "ddyddiau",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "plural"
      ]
    },
    {
      "form": "nydd",
      "raw_tags": [
        "Nasalisation"
      ],
      "tags": [
        "singular"
      ]
    },
    {
      "form": "nyddiau",
      "raw_tags": [
        "Nasalisation"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Jour."
      ],
      "id": "fr-dydd-cy-noun-GvnVIvCJ"
    }
  ],
  "sounds": [
    {
      "ipa": "\\di:ð\\"
    },
    {
      "ipa": "\\dɨ:ð\\"
    },
    {
      "audio": "Cy-dydd.ogg",
      "ipa": "di:đ",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5b/Cy-dydd.ogg/Cy-dydd.ogg.mp3",
      "ogg_url": "https://commons.wikimedia.org/wiki/Special:FilePath/Cy-dydd.ogg"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "dydd"
}

{
  "categories": [
    "Calendrier en gallois",
    "Mots en gallois issus d’un mot en indo-européen commun",
    "Mots en gallois issus d’un mot en moyen gallois",
    "Mots en gallois issus d’un mot en proto-celtique",
    "Mots en gallois issus d’un mot en vieux brittonique",
    "Mots en gallois issus d’un mot en vieux gallois",
    "Noms communs en gallois",
    "gallois",
    "Étymologies en gallois incluant une reconstruction"
  ],
  "etymology_texts": [
    "Du moyen gallois dyð, dyd, du vieux gallois did, du vieux brittonique *dið, du proto-celtique *dīyos, de l’indo-européen commun *dyḗws.",
    "Apparenté breton deiz."
  ],
  "forms": [
    {
      "form": "dyddiau",
      "tags": [
        "plural",
        "unmutated"
      ]
    },
    {
      "form": "ddydd",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "singular"
      ]
    },
    {
      "form": "ddyddiau",
      "raw_tags": [
        "Lénition"
      ],
      "tags": [
        "plural"
      ]
    },
    {
      "form": "nydd",
      "raw_tags": [
        "Nasalisation"
      ],
      "tags": [
        "singular"
      ]
    },
    {
      "form": "nyddiau",
      "raw_tags": [
        "Nasalisation"
      ],
      "tags": [
        "plural"
      ]
    }
  ],
  "lang": "Gallois",
  "lang_code": "cy",
  "pos": "noun",
  "pos_title": "Nom commun",
  "senses": [
    {
      "glosses": [
        "Jour."
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "\\di:ð\\"
    },
    {
      "ipa": "\\dɨ:ð\\"
    },
    {
      "audio": "Cy-dydd.ogg",
      "ipa": "di:đ",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/5/5b/Cy-dydd.ogg/Cy-dydd.ogg.mp3",
      "ogg_url": "https://commons.wikimedia.org/wiki/Special:FilePath/Cy-dydd.ogg"
    }
  ],
  "tags": [
    "masculine"
  ],
  "word": "dydd"
}