"yoctometer" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "yocto",
        "3": "meter"
      },
      "expansion": "yocto- + meter",
      "name": "pre"
    }
  ],
  "etymology_text": "From yocto- + meter.",
  "forms": [
    {
      "form": "yoctometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "yoctometer (plural yoctometers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "yoctometre"
        }
      ],
      "categories": [
        {
          "kind": "other",
          "name": "American English",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with yocto-",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "langcode": "en",
          "name": "SI units",
          "orig": "en:SI units",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, \"The Werewolf Transformation\"",
          "text": "Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond."
        }
      ],
      "glosses": [
        "US spelling of yoctometre."
      ],
      "id": "en-yoctometer-en-noun-en:Q3221356",
      "links": [
        [
          "yoctometre",
          "yoctometre#English:_Q3221356"
        ]
      ],
      "senseid": [
        "en:Q3221356"
      ],
      "tags": [
        "US",
        "alt-of"
      ],
      "wikidata": [
        "Q3221356"
      ]
    }
  ],
  "word": "yoctometer"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "yocto",
        "3": "meter"
      },
      "expansion": "yocto- + meter",
      "name": "pre"
    }
  ],
  "etymology_text": "From yocto- + meter.",
  "forms": [
    {
      "form": "yoctometers",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "yoctometer (plural yoctometers)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "alt_of": [
        {
          "word": "yoctometre"
        }
      ],
      "categories": [
        "American English",
        "English countable nouns",
        "English entries with incorrect language header",
        "English lemmas",
        "English nouns",
        "English terms prefixed with yocto-",
        "Pages with 1 entry",
        "Pages with entries",
        "en:SI units"
      ],
      "examples": [
        {
          "ref": "2012, Mark Cendrowski, The Big Bang Theory, Season 5, Episode 18, \"The Werewolf Transformation\"",
          "text": "Sheldon Cooper: My hair is growing at the rate of 4.6 yoctometers per femtosecond."
        }
      ],
      "glosses": [
        "US spelling of yoctometre."
      ],
      "links": [
        [
          "yoctometre",
          "yoctometre#English:_Q3221356"
        ]
      ],
      "senseid": [
        "en:Q3221356"
      ],
      "tags": [
        "US",
        "alt-of"
      ],
      "wikidata": [
        "Q3221356"
      ]
    }
  ],
  "word": "yoctometer"
}