"điểm uốn" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "điểm",
        "3": "uốn",
        "t1": "point",
        "t2": "to bend"
      },
      "expansion": "điểm (“point”) + uốn (“to bend”)",
      "name": "af"
    }
  ],
  "etymology_text": "điểm (“point”) + uốn (“to bend”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "điểm uốn",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "điểm uốn",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Calculus",
          "orig": "vi:Calculus",
          "parents": [
            "Mathematical analysis",
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "vi",
          "name": "Geometry",
          "orig": "vi:Geometry",
          "parents": [
            "Mathematics",
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "The graph contains two inflection points.",
          "text": "Đồ thị có hai điểm uốn.",
          "type": "example"
        }
      ],
      "glosses": [
        "a point of inflection"
      ],
      "id": "en-điểm_uốn-vi-noun-PGniSO0J",
      "links": [
        [
          "calculus",
          "calculus"
        ],
        [
          "geometry",
          "geometry"
        ],
        [
          "point of inflection",
          "point of inflection#English"
        ]
      ],
      "raw_glosses": [
        "(calculus, geometry) a point of inflection"
      ],
      "topics": [
        "calculus",
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɗiəm˧˩ ʔuən˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɗiəm˧˨ ʔuəŋ˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɗim˨˩˦ ʔuəŋ˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "điểm uốn"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "điểm",
        "3": "uốn",
        "t1": "point",
        "t2": "to bend"
      },
      "expansion": "điểm (“point”) + uốn (“to bend”)",
      "name": "af"
    }
  ],
  "etymology_text": "điểm (“point”) + uốn (“to bend”).",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "điểm uốn",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "điểm uốn",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "Pages with 1 entry",
        "Pages with entries",
        "Vietnamese compound terms",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
        "Vietnamese terms with IPA pronunciation",
        "Vietnamese terms with usage examples",
        "vi:Calculus",
        "vi:Geometry"
      ],
      "examples": [
        {
          "english": "The graph contains two inflection points.",
          "text": "Đồ thị có hai điểm uốn.",
          "type": "example"
        }
      ],
      "glosses": [
        "a point of inflection"
      ],
      "links": [
        [
          "calculus",
          "calculus"
        ],
        [
          "geometry",
          "geometry"
        ],
        [
          "point of inflection",
          "point of inflection#English"
        ]
      ],
      "raw_glosses": [
        "(calculus, geometry) a point of inflection"
      ],
      "topics": [
        "calculus",
        "geometry",
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[ʔɗiəm˧˩ ʔuən˧˦]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[ʔɗiəm˧˨ ʔuəŋ˦˧˥]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[ʔɗim˨˩˦ ʔuəŋ˦˥]",
      "note": "Saigon"
    }
  ],
  "word": "điểm uốn"
}