"diff EQ" meaning in English

{
  "forms": [
    {
      "form": "diff EQs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "diff EQ (countable and uncountable, plural diff EQs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "A differential equation."
      ],
      "id": "en-diff_EQ-en-noun-gcbB8moh",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "differential equation",
          "differential equation"
        ]
      ],
      "raw_glosses": [
        "(mathematics, informal) A differential equation."
      ],
      "tags": [
        "countable",
        "informal",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "11 89",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "12 88",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "5 95",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "32 68",
          "kind": "other",
          "langcode": "en",
          "name": "Differential equations",
          "orig": "en:Differential equations",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Are you taking diff EQ this semester?",
          "type": "example"
        }
      ],
      "glosses": [
        "A college course in differential equations, usually as part of a standardized calculus curriculum."
      ],
      "id": "en-diff_EQ-en-noun-Q~XqT9k-",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "differential equation",
          "differential equation"
        ],
        [
          "calculus",
          "calculus"
        ],
        [
          "curriculum",
          "curriculum"
        ]
      ],
      "raw_glosses": [
        "(mathematics, informal) A college course in differential equations, usually as part of a standardized calculus curriculum."
      ],
      "tags": [
        "countable",
        "informal",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dɪ.fiˈkjuː/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "diff EQ"
}

{
  "categories": [
    "English countable nouns",
    "English entries with incorrect language header",
    "English lemmas",
    "English multiword terms",
    "English nouns",
    "English uncountable nouns",
    "English words containing Q not followed by U",
    "Pages with 1 entry",
    "Pages with entries",
    "en:Differential equations"
  ],
  "forms": [
    {
      "form": "diff EQs",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "diff EQ (countable and uncountable, plural diff EQs)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English informal terms",
        "en:Mathematics"
      ],
      "glosses": [
        "A differential equation."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "differential equation",
          "differential equation"
        ]
      ],
      "raw_glosses": [
        "(mathematics, informal) A differential equation."
      ],
      "tags": [
        "countable",
        "informal",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    },
    {
      "categories": [
        "English informal terms",
        "English terms with usage examples",
        "en:Mathematics"
      ],
      "examples": [
        {
          "text": "Are you taking diff EQ this semester?",
          "type": "example"
        }
      ],
      "glosses": [
        "A college course in differential equations, usually as part of a standardized calculus curriculum."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "differential equation",
          "differential equation"
        ],
        [
          "calculus",
          "calculus"
        ],
        [
          "curriculum",
          "curriculum"
        ]
      ],
      "raw_glosses": [
        "(mathematics, informal) A college course in differential equations, usually as part of a standardized calculus curriculum."
      ],
      "tags": [
        "countable",
        "informal",
        "uncountable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/dɪ.fiˈkjuː/",
      "tags": [
        "US"
      ]
    }
  ],
  "word": "diff EQ"
}