"piecewise smooth" meaning in English

{
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        "2": "piecewise<pos:adv>",
        "3": "smooth"
      },
      "expansion": "piecewise (adverb) + smooth",
      "name": "af"
    }
  ],
  "etymology_text": "From piecewise (adverb) + smooth.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "piecewise smooth (not comparable)",
      "name": "en-adj"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
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        {
          "kind": "other",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [],
          "source": "w"
        }
      ],
      "glosses": [
        "Equal to a sum of finitely many parts, each of which is smooth; often said of curves and surfaces"
      ],
      "id": "en-piecewise_smooth-en-adj-gHLhVTSM",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "Equal",
          "equal#English"
        ],
        [
          "sum",
          "sum"
        ],
        [
          "finite",
          "finite"
        ],
        [
          "smooth",
          "smooth"
        ],
        [
          "curve",
          "curve"
        ],
        [
          "surface",
          "surface"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Equal to a sum of finitely many parts, each of which is smooth; often said of curves and surfaces"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ],
      "translations": [
        {
          "code": "fr",
          "lang": "French",
          "sense": "mathematics: equal to a sum of finitely many smooth parts",
          "word": "lisse par morceaux"
        },
        {
          "code": "pt",
          "lang": "Portuguese",
          "sense": "mathematics: equal to a sum of finitely many smooth parts",
          "word": "liso por partes"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "mathematics: equal to a sum of finitely many smooth parts",
          "word": "suave a trozos"
        },
        {
          "code": "es",
          "lang": "Spanish",
          "sense": "mathematics: equal to a sum of finitely many smooth parts",
          "word": "suave por partes"
        }
      ]
    }
  ],
  "word": "piecewise smooth"
}

{
  "etymology_templates": [
    {
      "args": {
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        "2": "piecewise<pos:adv>",
        "3": "smooth"
      },
      "expansion": "piecewise (adverb) + smooth",
      "name": "af"
    }
  ],
  "etymology_text": "From piecewise (adverb) + smooth.",
  "head_templates": [
    {
      "args": {
        "1": "-"
      },
      "expansion": "piecewise smooth (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
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      "glosses": [
        "Equal to a sum of finitely many parts, each of which is smooth; often said of curves and surfaces"
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "Equal",
          "equal#English"
        ],
        [
          "sum",
          "sum"
        ],
        [
          "finite",
          "finite"
        ],
        [
          "smooth",
          "smooth"
        ],
        [
          "curve",
          "curve"
        ],
        [
          "surface",
          "surface"
        ]
      ],
      "raw_glosses": [
        "(mathematics) Equal to a sum of finitely many parts, each of which is smooth; often said of curves and surfaces"
      ],
      "tags": [
        "not-comparable"
      ],
      "topics": [
        "mathematics",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "fr",
      "lang": "French",
      "sense": "mathematics: equal to a sum of finitely many smooth parts",
      "word": "lisse par morceaux"
    },
    {
      "code": "pt",
      "lang": "Portuguese",
      "sense": "mathematics: equal to a sum of finitely many smooth parts",
      "word": "liso por partes"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "mathematics: equal to a sum of finitely many smooth parts",
      "word": "suave a trozos"
    },
    {
      "code": "es",
      "lang": "Spanish",
      "sense": "mathematics: equal to a sum of finitely many smooth parts",
      "word": "suave por partes"
    }
  ],
  "word": "piecewise smooth"
}