"ffermiwm" meaning in Welsh

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "fermium"
      },
      "expansion": "English fermium",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from English fermium, named after Enrico Fermi.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "ffermiwm m (uncountable, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Welsh entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "fermium"
      ],
      "id": "en-ffermiwm-cy-noun-J1CtKWmR",
      "links": [
        [
          "fermium",
          "fermium"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable",
        "uncountable"
      ],
      "wikipedia": [
        "Enrico Fermi",
        "cy:ffermiwm"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈfɛrmjʊm/"
    },
    {
      "rhymes": "-ɛrmjʊm"
    }
  ],
  "word": "ffermiwm"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "cy",
        "2": "en",
        "3": "fermium"
      },
      "expansion": "English fermium",
      "name": "bor"
    }
  ],
  "etymology_text": "Borrowed from English fermium, named after Enrico Fermi.",
  "head_templates": [
    {
      "args": {
        "1": "m",
        "2": "-"
      },
      "expansion": "ffermiwm m (uncountable, not mutable)",
      "name": "cy-noun"
    }
  ],
  "lang": "Welsh",
  "lang_code": "cy",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Rhymes:Welsh/ɛrmjʊm",
        "Rhymes:Welsh/ɛrmjʊm/2 syllables",
        "Welsh entries with incorrect language header",
        "Welsh lemmas",
        "Welsh masculine nouns",
        "Welsh non-mutable terms",
        "Welsh nouns",
        "Welsh terms borrowed from English",
        "Welsh terms derived from English",
        "Welsh terms with IPA pronunciation",
        "Welsh uncountable nouns"
      ],
      "glosses": [
        "fermium"
      ],
      "links": [
        [
          "fermium",
          "fermium"
        ]
      ],
      "tags": [
        "masculine",
        "not-mutable",
        "uncountable"
      ],
      "wikipedia": [
        "Enrico Fermi",
        "cy:ffermiwm"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˈfɛrmjʊm/"
    },
    {
      "rhymes": "-ɛrmjʊm"
    }
  ],
  "word": "ffermiwm"
}