"megameter" meaning in English

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        "3": "mégamètre"
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      "form": "megameters",
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  "lang_code": "en",
  "pos": "noun",
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        "An instrument for determining longitude by observation of the stars."
      ],
      "id": "en-megameter-en-noun-5qPk8sqm",
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          "longitude",
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      "glosses": [
        "A micrometer."
      ],
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  "sounds": [
    {
      "ipa": "/mɛˈɡɐˌmɪtə/",
      "tags": [
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    },
    {
      "ipa": "/mɛˈɡɐˌmɪtəɹ/",
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    },
    {
      "ipa": "[mɛˈɡɐˌmɪɾɚ]",
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    }
  ],
  "word": "megameter"
}

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  "etymology_text": "From mega- (“one million”) + meter.",
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      "form": "megameters",
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          "word": "megametre"
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        {
          "ref": "2009, J. Scott Turner, The Extended Organism: The Physiology of Animal-Built Structures, page 15:",
          "text": "Common numbers like distances would never be expressed in megameters or nanomiles — it would bring us too close to the Dilbertian world of pocket protectors and calculator holsters.",
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      "ipa": "/ˈmɛɡəˌmiːtəɹ/"
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        "A micrometer."
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  "forms": [
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          "word": "megametre"
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      "ipa": "/ˈmɛɡəˌmiːtəɹ/"
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}