"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 with particle (upon)",
          "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": "quotation"
        }
      ],
      "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 with particle (upon)",
        "English terms with IPA pronunciation",
        "English terms with quotations",
        "English verbs",
        "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": "quotation"
        }
      ],
      "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"
}