"rontogram" meaning in English

{
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        "2": "ronto",
        "3": "gram"
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      "expansion": "ronto- + gram",
      "name": "prefix"
    }
  ],
  "etymology_text": "ronto- + gram",
  "forms": [
    {
      "form": "rontograms",
      "tags": [
        "plural"
      ]
    }
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  "head_templates": [
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      "args": {},
      "expansion": "rontogram (plural rontograms)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "name": "English terms prefixed with ronto-",
          "parents": [],
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          "kind": "topical",
          "langcode": "en",
          "name": "Metrology",
          "orig": "en:Metrology",
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      "examples": [
        {
          "ref": "2022 November 18, Ian Sample, “Earth weighs in at six ronnagrams as new prefixes picked for big and small”, in The Guardian",
          "text": "The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams. An electron weighs about a rontogram, and a single bit of data stored on a mobile phone adds about 10 quectograms to its mass.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg"
      ],
      "id": "en-rontogram-en-noun-qFsPRhZp",
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "mass",
          "mass#English"
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          "gram",
          "gram"
        ],
        [
          "rg",
          "rg"
        ]
      ],
      "raw_glosses": [
        "(metrology) An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "word": "rontogram"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "ronto",
        "3": "gram"
      },
      "expansion": "ronto- + gram",
      "name": "prefix"
    }
  ],
  "etymology_text": "ronto- + gram",
  "forms": [
    {
      "form": "rontograms",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
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      "expansion": "rontogram (plural rontograms)",
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  "lang_code": "en",
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      "examples": [
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          "ref": "2022 November 18, Ian Sample, “Earth weighs in at six ronnagrams as new prefixes picked for big and small”, in The Guardian",
          "text": "The arrival of the new prefixes means the Earth can now be said to weigh six ronnagrams, and Jupiter about two quettagrams. An electron weighs about a rontogram, and a single bit of data stored on a mobile phone adds about 10 quectograms to its mass.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg"
      ],
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          "gram",
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          "rg",
          "rg"
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      ],
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        "(metrology) An SI unit of mass equal to 10⁻²⁷ grams. Symbol: rg"
      ],
      "topics": [
        "metrology"
      ]
    }
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  "word": "rontogram"
}