"abbreviated number" meaning in English

{
  "forms": [
    {
      "form": "abbreviated numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "abbreviated number (plural abbreviated numbers)",
      "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"
        }
      ],
      "glosses": [
        "A number which has had significant figures omitted beyond a certain point to make calculations easier; rounded number."
      ],
      "id": "en-abbreviated_number-en-noun-GLuwt9bf",
      "links": [
        [
          "number",
          "number"
        ],
        [
          "rounded number",
          "rounded number"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/əˈbɹi.viˌeɪ.tɪd ˈnʌm.bɚ/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "abbreviated number"
}

{
  "forms": [
    {
      "form": "abbreviated numbers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "abbreviated number (plural abbreviated numbers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English terms with IPA pronunciation"
      ],
      "glosses": [
        "A number which has had significant figures omitted beyond a certain point to make calculations easier; rounded number."
      ],
      "links": [
        [
          "number",
          "number"
        ],
        [
          "rounded number",
          "rounded number"
        ]
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/əˈbɹi.viˌeɪ.tɪd ˈnʌm.bɚ/",
      "tags": [
        "General-American"
      ]
    }
  ],
  "word": "abbreviated number"
}