"linear order" meaning in English

{
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      "form": "linear orders",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
    {
      "args": {},
      "expansion": "linear order (plural linear orders)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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          "kind": "other",
          "name": "English entries with incorrect language header",
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          "langcode": "en",
          "name": "Set theory",
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            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
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        }
      ],
      "examples": [
        {
          "text": "A set of numbers on a number line form a linear order."
        }
      ],
      "glosses": [
        "total order"
      ],
      "id": "en-linear_order-en-noun-Zs~xqku4",
      "links": [
        [
          "set theory",
          "set theory"
        ],
        [
          "total order",
          "total order"
        ]
      ],
      "raw_glosses": [
        "(set theory, order theory) total order"
      ],
      "topics": [
        "mathematics",
        "order-theory",
        "sciences",
        "set-theory"
      ]
    }
  ],
  "word": "linear order"
}

{
  "forms": [
    {
      "form": "linear orders",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "linear order (plural linear orders)",
      "name": "en-noun"
    }
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
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        "English countable nouns",
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      "examples": [
        {
          "text": "A set of numbers on a number line form a linear order."
        }
      ],
      "glosses": [
        "total order"
      ],
      "links": [
        [
          "set theory",
          "set theory"
        ],
        [
          "total order",
          "total order"
        ]
      ],
      "raw_glosses": [
        "(set theory, order theory) total order"
      ],
      "topics": [
        "mathematics",
        "order-theory",
        "sciences",
        "set-theory"
      ]
    }
  ],
  "word": "linear order"
}