"tangent line" meaning in English

{
  "forms": [
    {
      "form": "tangent lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tangent line (plural tangent lines)",
      "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": "Differential geometry",
          "orig": "en:Differential geometry",
          "parents": [
            "Geometry",
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "Synonym of tangent (“straight line touching a curve at a single point without crossing it there”)."
      ],
      "id": "en-tangent_line-en-noun-g-ht6F5B",
      "links": [
        [
          "differential geometry",
          "differential geometry"
        ],
        [
          "tangent",
          "tangent#English"
        ]
      ],
      "qualifier": "differential geometry",
      "raw_glosses": [
        "(differential geometry) Synonym of tangent (“straight line touching a curve at a single point without crossing it there”)."
      ],
      "synonyms": [
        {
          "extra": "straight line touching a curve at a single point without crossing it there",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tangent"
        }
      ]
    }
  ],
  "word": "tangent line"
}

{
  "forms": [
    {
      "form": "tangent lines",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "tangent line (plural tangent lines)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "en:Differential geometry"
      ],
      "glosses": [
        "Synonym of tangent (“straight line touching a curve at a single point without crossing it there”)."
      ],
      "links": [
        [
          "differential geometry",
          "differential geometry"
        ],
        [
          "tangent",
          "tangent#English"
        ]
      ],
      "qualifier": "differential geometry",
      "raw_glosses": [
        "(differential geometry) Synonym of tangent (“straight line touching a curve at a single point without crossing it there”)."
      ],
      "synonyms": [
        {
          "extra": "straight line touching a curve at a single point without crossing it there",
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "tangent"
        }
      ]
    }
  ],
  "word": "tangent line"
}