"prex" meaning in English

{
  "etymology_number": 1,
  "etymology_text": "From US college slang; from 1828.",
  "forms": [
    {
      "form": "prexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prex (plural prexes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Universities",
          "orig": "en:Universities",
          "parents": [
            "Schools",
            "Buildings",
            "Education",
            "Buildings and structures",
            "Society",
            "Architecture",
            "All topics",
            "Applied sciences",
            "Art",
            "Fundamental",
            "Sciences",
            "Culture"
          ],
          "source": "w"
        },
        {
          "_dis": "83 17",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "74 5 15 5",
          "kind": "other",
          "name": "Pages with 2 entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "75 5 15 5",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "glosses": [
        "A president, especially of a university."
      ],
      "id": "en-prex-en-noun-uJil46Kj",
      "links": [
        [
          "university",
          "university"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "president",
          "president"
        ]
      ],
      "qualifier": "university slang",
      "raw_glosses": [
        "(US, university slang) A president, especially of a university."
      ],
      "synonyms": [
        {
          "sense": "president, especially of a university",
          "word": "prexy"
        }
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛks"
    }
  ],
  "word": "prex"
}

{
  "etymology_number": 2,
  "forms": [
    {
      "form": "prexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prex (plural prexes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prefix"
        }
      ],
      "categories": [],
      "glosses": [
        "Abbreviation of prefix."
      ],
      "id": "en-prex-en-noun-fLoS48Ch",
      "links": [
        [
          "prefix",
          "prefix#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛks"
    }
  ],
  "word": "prex"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 2 entries",
    "Pages with entries",
    "Rhymes:English/ɛks",
    "Rhymes:English/ɛks/1 syllable"
  ],
  "etymology_number": 1,
  "etymology_text": "From US college slang; from 1828.",
  "forms": [
    {
      "form": "prexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prex (plural prexes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "American English",
        "English student slang",
        "en:Universities"
      ],
      "glosses": [
        "A president, especially of a university."
      ],
      "links": [
        [
          "university",
          "university"
        ],
        [
          "slang",
          "slang"
        ],
        [
          "president",
          "president"
        ]
      ],
      "qualifier": "university slang",
      "raw_glosses": [
        "(US, university slang) A president, especially of a university."
      ],
      "tags": [
        "US"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛks"
    }
  ],
  "synonyms": [
    {
      "sense": "president, especially of a university",
      "word": "prexy"
    }
  ],
  "word": "prex"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "Pages with 2 entries",
    "Pages with entries",
    "Rhymes:English/ɛks",
    "Rhymes:English/ɛks/1 syllable"
  ],
  "etymology_number": 2,
  "forms": [
    {
      "form": "prexes",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "prex (plural prexes)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "prefix"
        }
      ],
      "categories": [
        "English abbreviations"
      ],
      "glosses": [
        "Abbreviation of prefix."
      ],
      "links": [
        [
          "prefix",
          "prefix#English"
        ]
      ],
      "tags": [
        "abbreviation",
        "alt-of"
      ]
    }
  ],
  "sounds": [
    {
      "rhymes": "-ɛks"
    }
  ],
  "word": "prex"
}