"gwrthrewydd" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "gwrth-",
        "3": "rhewi",
        "4": "-ydd"
      },
      "expansion": "gwrth- + rhewi + -ydd",
      "name": "af"
    }
  ],
  "etymology_text": "gwrth- + rhewi + -ydd",
  "forms": [
    {
      "form": "gwrthrewyddion",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "gwrthrewyddion"
      },
      "expansion": "gwrthrewydd m (plural gwrthrewyddion)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh terms prefixed with gwrth-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Welsh terms suffixed with -ydd",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "antifreeze"
      ],
      "id": "en-gwrthrewydd-cy-noun-10FRRnn4",
      "links": [
        [
          "antifreeze",
          "antifreeze"
        ]
      ],
      "related": [
        {
          "english": "refrigerant",
          "tags": [
            "masculine"
          ],
          "word": "rhewydd"
        }
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡʊrθˈrɛwɪð/"
    }
  ],
  "word": "gwrthrewydd"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "gwrth-",
        "3": "rhewi",
        "4": "-ydd"
      },
      "expansion": "gwrth- + rhewi + -ydd",
      "name": "af"
    }
  ],
  "etymology_text": "gwrth- + rhewi + -ydd",
  "forms": [
    {
      "form": "gwrthrewyddion",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "gwrthrewyddion"
      },
      "expansion": "gwrthrewydd m (plural gwrthrewyddion)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "related": [
    {
      "english": "refrigerant",
      "tags": [
        "masculine"
      ],
      "word": "rhewydd"
    }
  ],
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Welsh countable nouns",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh nouns",
        "Welsh nouns with red links in their headword lines",
        "Welsh terms prefixed with gwrth-",
        "Welsh terms suffixed with -ydd"
      ],
      "glosses": [
        "antifreeze"
      ],
      "links": [
        [
          "antifreeze",
          "antifreeze"
        ]
      ],
      "tags": [
        "masculine"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɡʊrθˈrɛwɪð/"
    }
  ],
  "word": "gwrthrewydd"
}