"subject heading" meaning in English

{
  "forms": [
    {
      "form": "subject headings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subject heading (plural subject headings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Information science",
          "orig": "en:Information science",
          "parents": [
            "Applied sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "1986, Jay Elwood Daily, Organizing Nonprint Materials",
          "text": "Kings of England, for instance, is a good subject heading because the preposition can be omitted only with difficulty and lead to statements that some patron of the library will delight in telling the librarian are untrue. English Kings, for instance, would be false so far as James I is concerned, because he was Scottish, and George I, because he was German.",
          "type": "quotation"
        },
        {
          "ref": "1998, Thomas Mann, The Oxford Guide to Library Research",
          "text": "A drama student interested in the avant-garde \"Living Theatre\" group of the 1960s found that the right subject heading to use in the Humanities Index is \"Experimental theatre.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The name of a category in which a bibliographical record is included."
      ],
      "id": "en-subject_heading-en-noun-jw6SpOvh",
      "links": [
        [
          "information science",
          "information science"
        ]
      ],
      "raw_glosses": [
        "(information science) The name of a category in which a bibliographical record is included."
      ],
      "related": [
        {
          "word": "index term"
        },
        {
          "word": "descriptor"
        },
        {
          "word": "subject term"
        },
        {
          "word": "authorized term"
        }
      ],
      "topics": [
        "computing",
        "engineering",
        "human-sciences",
        "information-science",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "subject heading"
}

{
  "forms": [
    {
      "form": "subject headings",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subject heading (plural subject headings)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "index term"
    },
    {
      "word": "descriptor"
    },
    {
      "word": "subject term"
    },
    {
      "word": "authorized term"
    }
  ],
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with quotations",
        "en:Information science"
      ],
      "examples": [
        {
          "ref": "1986, Jay Elwood Daily, Organizing Nonprint Materials",
          "text": "Kings of England, for instance, is a good subject heading because the preposition can be omitted only with difficulty and lead to statements that some patron of the library will delight in telling the librarian are untrue. English Kings, for instance, would be false so far as James I is concerned, because he was Scottish, and George I, because he was German.",
          "type": "quotation"
        },
        {
          "ref": "1998, Thomas Mann, The Oxford Guide to Library Research",
          "text": "A drama student interested in the avant-garde \"Living Theatre\" group of the 1960s found that the right subject heading to use in the Humanities Index is \"Experimental theatre.\"",
          "type": "quotation"
        }
      ],
      "glosses": [
        "The name of a category in which a bibliographical record is included."
      ],
      "links": [
        [
          "information science",
          "information science"
        ]
      ],
      "raw_glosses": [
        "(information science) The name of a category in which a bibliographical record is included."
      ],
      "topics": [
        "computing",
        "engineering",
        "human-sciences",
        "information-science",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences"
      ]
    }
  ],
  "word": "subject heading"
}