"cực trị" meaning in Vietnamese

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "極值"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "極",
        "2": "extreme",
        "3": "值",
        "4": "value"
      },
      "expansion": "Sino-Vietnamese word from 極值, composed of 極 (“extreme”) and 值 (“value”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 極值, composed of 極 (“extreme”) and 值 (“value”)",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "cực trị",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "cực trị",
      "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"
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          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "name": "Vietnamese entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "vi",
          "name": "Mathematics",
          "orig": "vi:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "an extremum"
      ],
      "id": "en-cực_trị-vi-noun-~ZitRiSD",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "extremum",
          "extremum"
        ]
      ],
      "raw_glosses": [
        "(mathematics) an extremum"
      ],
      "related": [
        {
          "word": "cực đại"
        },
        {
          "word": "cực tiểu"
        },
        {
          "word": "vô cực"
        }
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kɨk̚˧˨ʔ t͡ɕi˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[kɨk̚˨˩ʔ ʈɪj˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[kɨk̚˨˩˨ ʈɪj˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "cực trị"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "vi",
        "2": "極值"
      },
      "expansion": "",
      "name": "etymid"
    },
    {
      "args": {
        "1": "vi",
        "2": "Sino-Vietnamese words"
      },
      "expansion": "",
      "name": "categorize"
    },
    {
      "args": {
        "1": "極",
        "2": "extreme",
        "3": "值",
        "4": "value"
      },
      "expansion": "Sino-Vietnamese word from 極值, composed of 極 (“extreme”) and 值 (“value”)",
      "name": "vi-etym-sino"
    }
  ],
  "etymology_text": "Sino-Vietnamese word from 極值, composed of 極 (“extreme”) and 值 (“value”)",
  "head_templates": [
    {
      "args": {
        "1": "vi",
        "2": "noun",
        "3": "",
        "4": "",
        "head": "",
        "tr": ""
      },
      "expansion": "cực trị",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "cực trị",
      "name": "vi-noun"
    }
  ],
  "lang": "Vietnamese",
  "lang_code": "vi",
  "pos": "noun",
  "related": [
    {
      "word": "cực đại"
    },
    {
      "word": "cực tiểu"
    },
    {
      "word": "vô cực"
    }
  ],
  "senses": [
    {
      "categories": [
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        "Pages with entries",
        "Sino-Vietnamese words",
        "Vietnamese entries with incorrect language header",
        "Vietnamese lemmas",
        "Vietnamese nouns",
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      ],
      "glosses": [
        "an extremum"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "extremum",
          "extremum"
        ]
      ],
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        "(mathematics) an extremum"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "[kɨk̚˧˨ʔ t͡ɕi˧˨ʔ]",
      "tags": [
        "Hà-Nội"
      ]
    },
    {
      "ipa": "[kɨk̚˨˩ʔ ʈɪj˨˩ʔ]",
      "tags": [
        "Huế"
      ]
    },
    {
      "ipa": "[kɨk̚˨˩˨ ʈɪj˨˩˨]",
      "note": "Saigon"
    }
  ],
  "word": "cực trị"
}