"build upon" meaning in English

{
  "forms": [
    {
      "form": "builds upon",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "building upon",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "built upon",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "built upon",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "build<,,built> upon"
      },
      "expansion": "build upon (third-person singular simple present builds upon, present participle building upon, simple past and past participle built upon)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English phrasal verbs formed with \"upon\"",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2023 November 15, Chris Howe, “East West Rail and the Cambridge connection”, in RAIL, number 996, page 56:",
          "text": "However, while reusing the existing alignment was considered, it was ultimately discounted for several reasons - not least because some sections have been built upon, particularly approaching Cambridge from the south, while the section through Bedford now forms part of a country park.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of build on"
      ],
      "id": "en-build_upon-en-verb-Bc8GEhi9",
      "links": [
        [
          "build on",
          "build on#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "build on"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bɪldʌpɑn/"
    },
    {
      "ipa": "/bɪldʌpɔn/"
    },
    {
      "rhymes": "-ɒn"
    }
  ],
  "word": "build upon"
}

{
  "forms": [
    {
      "form": "builds upon",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "building upon",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "built upon",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "built upon",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "build<,,built> upon"
      },
      "expansion": "build upon (third-person singular simple present builds upon, present participle building upon, simple past and past participle built upon)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English phrasal verbs",
        "English phrasal verbs formed with \"upon\"",
        "English terms with quotations",
        "English verbs",
        "Pages with 1 entry",
        "Pages with entries",
        "Rhymes:English/ɒn"
      ],
      "examples": [
        {
          "ref": "2023 November 15, Chris Howe, “East West Rail and the Cambridge connection”, in RAIL, number 996, page 56:",
          "text": "However, while reusing the existing alignment was considered, it was ultimately discounted for several reasons - not least because some sections have been built upon, particularly approaching Cambridge from the south, while the section through Bedford now forms part of a country park.",
          "type": "quote"
        }
      ],
      "glosses": [
        "Synonym of build on"
      ],
      "links": [
        [
          "build on",
          "build on#English"
        ]
      ],
      "synonyms": [
        {
          "tags": [
            "synonym",
            "synonym-of"
          ],
          "word": "build on"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/bɪldʌpɑn/"
    },
    {
      "ipa": "/bɪldʌpɔn/"
    },
    {
      "rhymes": "-ɒn"
    }
  ],
  "word": "build upon"
}