"mat sci" meaning in English

{
  "etymology_text": "Clipped compound.",
  "forms": [
    {
      "form": "matsci",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "mat sci"
      },
      "expansion": "mat sci (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "materials science"
        }
      ],
      "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"
        }
      ],
      "glosses": [
        "Clipping of materials science."
      ],
      "id": "en-mat_sci-en-noun-yjA3ROz1",
      "links": [
        [
          "materials science",
          "materials science#English"
        ]
      ],
      "raw_glosses": [
        "(chiefly informal) Clipping of materials science."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "clipping",
        "informal",
        "uncountable"
      ],
      "wikipedia": [
        "Clipped compound"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌmæt ˈsaɪ/"
    },
    {
      "ipa": "/ˈmæt ˌsaɪ/"
    }
  ],
  "word": "mat sci"
}

{
  "etymology_text": "Clipped compound.",
  "forms": [
    {
      "form": "matsci",
      "tags": [
        "alternative"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "-",
        "head": "mat sci"
      },
      "expansion": "mat sci (uncountable)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "materials science"
        }
      ],
      "categories": [
        "English clippings",
        "English entries with incorrect language header",
        "English informal terms",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English syllabic abbreviations",
        "English uncountable nouns",
        "Pages with 1 entry",
        "Pages with entries",
        "en:Materials science"
      ],
      "glosses": [
        "Clipping of materials science."
      ],
      "links": [
        [
          "materials science",
          "materials science#English"
        ]
      ],
      "raw_glosses": [
        "(chiefly informal) Clipping of materials science."
      ],
      "tags": [
        "abbreviation",
        "alt-of",
        "clipping",
        "informal",
        "uncountable"
      ],
      "wikipedia": [
        "Clipped compound"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ˌmæt ˈsaɪ/"
    },
    {
      "ipa": "/ˈmæt ˌsaɪ/"
    }
  ],
  "word": "mat sci"
}