"ultrathin" meaning in English

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  "etymology_text": "From ultra- + thin.",
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  "lang_code": "en",
  "pos": "adj",
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          "text": "Planar metamaterials with subwavelength thickness, or metasurfaces, consisting of single-layer or few-layer stacks of planar structures, can be readily fabricated using lithography and nanoprinting methods, and the ultrathin thickness in the wave propagation direction can greatly suppress the undesirable losses.",
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      "glosses": [
        "Extremely thin; of utmost thinness."
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          "Extremely",
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      "translations": [
        {
          "code": "el",
          "lang": "Greek",
          "roman": "ypérleptos",
          "sense": "extremely thin",
          "word": "υπέρλεπτος"
        }
      ]
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  "word": "ultrathin"
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  "etymology_text": "From ultra- + thin.",
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  "lang_code": "en",
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          "thin",
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  "translations": [
    {
      "code": "el",
      "lang": "Greek",
      "roman": "ypérleptos",
      "sense": "extremely thin",
      "word": "υπέρλεπτος"
    }
  ],
  "word": "ultrathin"
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