"attometre" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "atto",
        "3": "metre"
      },
      "expansion": "atto- + metre",
      "name": "prefix"
    }
  ],
  "etymology_text": "atto- + metre",
  "forms": [
    {
      "form": "attometres",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "attometre (plural attometres)",
      "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 atto-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Metrology",
          "orig": "en:Metrology",
          "parents": [
            "Applied sciences",
            "Sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "SI units",
          "orig": "en:SI units",
          "parents": [
            "Units of measure",
            "Metrology",
            "Quantity",
            "Applied sciences",
            "Mathematics",
            "Sciences",
            "Formal sciences",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am"
      ],
      "id": "en-attometre-en-noun-NmVKxwrH",
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "length",
          "length#English"
        ],
        [
          "metre",
          "metre"
        ],
        [
          "am",
          "am"
        ]
      ],
      "raw_glosses": [
        "(metrology) An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am"
      ],
      "synonyms": [
        {
          "word": "am"
        },
        {
          "tags": [
            "US"
          ],
          "word": "attometer"
        }
      ],
      "topics": [
        "metrology"
      ],
      "translations": [
        {
          "code": "nl",
          "lang": "Dutch",
          "sense": "10-18 metres",
          "tags": [
            "masculine"
          ],
          "word": "attometer"
        },
        {
          "code": "fi",
          "lang": "Finnish",
          "sense": "10-18 metres",
          "word": "attometri"
        },
        {
          "code": "fr",
          "lang": "French",
          "sense": "10-18 metres",
          "tags": [
            "masculine"
          ],
          "word": "attomètre"
        },
        {
          "code": "it",
          "lang": "Italian",
          "sense": "10-18 metres",
          "tags": [
            "masculine"
          ],
          "word": "attometro"
        },
        {
          "code": "ms",
          "lang": "Malay",
          "sense": "10-18 metres",
          "word": "atometer"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "attómetr",
          "sense": "10-18 metres",
          "tags": [
            "masculine"
          ],
          "word": "атто́метр"
        }
      ]
    }
  ],
  "word": "attometre"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "atto",
        "3": "metre"
      },
      "expansion": "atto- + metre",
      "name": "prefix"
    }
  ],
  "etymology_text": "atto- + metre",
  "forms": [
    {
      "form": "attometres",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "attometre (plural attometres)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
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      ],
      "glosses": [
        "An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am"
      ],
      "links": [
        [
          "metrology",
          "metrology"
        ],
        [
          "length",
          "length#English"
        ],
        [
          "metre",
          "metre"
        ],
        [
          "am",
          "am"
        ]
      ],
      "raw_glosses": [
        "(metrology) An SI unit of length equal to 10⁻¹⁸ metres. Symbol: am"
      ],
      "topics": [
        "metrology"
      ]
    }
  ],
  "synonyms": [
    {
      "word": "am"
    },
    {
      "tags": [
        "US"
      ],
      "word": "attometer"
    }
  ],
  "translations": [
    {
      "code": "nl",
      "lang": "Dutch",
      "sense": "10-18 metres",
      "tags": [
        "masculine"
      ],
      "word": "attometer"
    },
    {
      "code": "fi",
      "lang": "Finnish",
      "sense": "10-18 metres",
      "word": "attometri"
    },
    {
      "code": "fr",
      "lang": "French",
      "sense": "10-18 metres",
      "tags": [
        "masculine"
      ],
      "word": "attomètre"
    },
    {
      "code": "it",
      "lang": "Italian",
      "sense": "10-18 metres",
      "tags": [
        "masculine"
      ],
      "word": "attometro"
    },
    {
      "code": "ms",
      "lang": "Malay",
      "sense": "10-18 metres",
      "word": "atometer"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "attómetr",
      "sense": "10-18 metres",
      "tags": [
        "masculine"
      ],
      "word": "атто́метр"
    }
  ],
  "word": "attometre"
}