"subexpression" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub",
        "3": "expression"
      },
      "expansion": "sub- + expression",
      "name": "prefix"
    }
  ],
  "etymology_text": "sub- + expression",
  "forms": [
    {
      "form": "subexpressions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subexpression (plural subexpressions)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "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 terms prefixed with sub-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Mathematics",
          "orig": "en:Mathematics",
          "parents": [
            "Formal sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Programming",
          "orig": "en:Programming",
          "parents": [
            "Computing",
            "Software engineering",
            "Technology",
            "Computer science",
            "Engineering",
            "Software",
            "All topics",
            "Sciences",
            "Applied sciences",
            "Media",
            "Fundamental",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An expression that is a part of a larger expression."
      ],
      "holonyms": [
        {
          "word": "expression"
        }
      ],
      "id": "en-subexpression-en-noun-icmqNNx4",
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "expression",
          "expression"
        ]
      ],
      "raw_glosses": [
        "(mathematics, programming) An expression that is a part of a larger expression."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ],
      "translations": [
        {
          "code": "cs",
          "lang": "Czech",
          "sense": "expression that is a part of a larger one",
          "tags": [
            "masculine"
          ],
          "word": "podvýraz"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "expression that is a part of a larger one",
          "tags": [
            "feminine"
          ],
          "word": "sottoespressione"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "podvyražénije",
          "sense": "expression that is a part of a larger one",
          "tags": [
            "neuter"
          ],
          "word": "подвыраже́ние"
        }
      ]
    }
  ],
  "word": "subexpression"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "sub",
        "3": "expression"
      },
      "expansion": "sub- + expression",
      "name": "prefix"
    }
  ],
  "etymology_text": "sub- + expression",
  "forms": [
    {
      "form": "subexpressions",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "subexpression (plural subexpressions)",
      "name": "en-noun"
    }
  ],
  "holonyms": [
    {
      "word": "expression"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with sub-",
        "en:Mathematics",
        "en:Programming"
      ],
      "glosses": [
        "An expression that is a part of a larger expression."
      ],
      "links": [
        [
          "mathematics",
          "mathematics"
        ],
        [
          "programming",
          "programming#Noun"
        ],
        [
          "expression",
          "expression"
        ]
      ],
      "raw_glosses": [
        "(mathematics, programming) An expression that is a part of a larger expression."
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "programming",
        "sciences"
      ]
    }
  ],
  "translations": [
    {
      "code": "cs",
      "lang": "Czech",
      "sense": "expression that is a part of a larger one",
      "tags": [
        "masculine"
      ],
      "word": "podvýraz"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "expression that is a part of a larger one",
      "tags": [
        "feminine"
      ],
      "word": "sottoespressione"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "podvyražénije",
      "sense": "expression that is a part of a larger one",
      "tags": [
        "neuter"
      ],
      "word": "подвыраже́ние"
    }
  ],
  "word": "subexpression"
}