"金属疲労" meaning in 日本語

{
  "categories": [
    {
      "kind": "other",
      "name": "日本語",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語_名詞",
      "parents": [],
      "source": "w"
    },
    {
      "kind": "other",
      "name": "日本語_材料科学",
      "parents": [],
      "source": "w"
    }
  ],
  "forms": [
    {
      "form": "きんぞくひろう"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "金属で起こる材料の疲労。"
      ],
      "id": "ja-金属疲労-ja-noun-JUtVk7bw"
    }
  ],
  "word": "金属疲労"
}

{
  "categories": [
    "日本語",
    "日本語_名詞",
    "日本語_材料科学"
  ],
  "forms": [
    {
      "form": "きんぞくひろう"
    }
  ],
  "lang": "日本語",
  "lang_code": "ja",
  "pos": "noun",
  "pos_title": "名詞",
  "senses": [
    {
      "glosses": [
        "金属で起こる材料の疲労。"
      ]
    }
  ],
  "word": "金属疲労"
}