"FATT" meaning in English

{
  "forms": [
    {
      "form": "FATTs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "FATT (plural FATTs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fracture appearance transition temperature"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Materials science",
          "orig": "en:Materials science",
          "parents": [
            "Engineering",
            "Sciences",
            "Applied sciences",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2002, D. Francois, A. Pineau, From Charpy to Present Impact Testing, Elsevier Science, →ISBN, page 397:",
          "text": "However, after 5% strain, all the Charpy values for grade A were still above 27J at +20°C, as required by the LR Rules and the mean crystallinities were all below 50% indicating that the FATTs for all the plates remained below ambient temperature.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Initialism of fracture appearance transition temperature."
      ],
      "id": "en-FATT-en-noun-LZXqus1b",
      "links": [
        [
          "materials science",
          "materials science"
        ],
        [
          "fracture appearance transition temperature",
          "fracture appearance transition temperature#English"
        ]
      ],
      "qualifier": "materials science",
      "raw_glosses": [
        "(materials science) Initialism of fracture appearance transition temperature."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "FATT"
}

{
  "forms": [
    {
      "form": "FATTs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "FATT (plural FATTs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fracture appearance transition temperature"
        }
      ],
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English initialisms",
        "English lemmas",
        "English nouns",
        "English terms with quotations",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Materials science"
      ],
      "examples": [
        {
          "ref": "2002, D. Francois, A. Pineau, From Charpy to Present Impact Testing, Elsevier Science, →ISBN, page 397:",
          "text": "However, after 5% strain, all the Charpy values for grade A were still above 27J at +20°C, as required by the LR Rules and the mean crystallinities were all below 50% indicating that the FATTs for all the plates remained below ambient temperature.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Initialism of fracture appearance transition temperature."
      ],
      "links": [
        [
          "materials science",
          "materials science"
        ],
        [
          "fracture appearance transition temperature",
          "fracture appearance transition temperature#English"
        ]
      ],
      "qualifier": "materials science",
      "raw_glosses": [
        "(materials science) Initialism of fracture appearance transition temperature."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "initialism"
      ]
    }
  ],
  "word": "FATT"
}