"fastgrowing" meaning in English

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      "expansion": "fastgrowing (not comparable)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fast-growing"
        }
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          "ref": "1988 January 15, C.C. Pyle, “Our Bodies, Their Selves”, in Chicago Reader:",
          "text": "So, you want to get in on this fastgrowing opportunity for spiritual enlightenment and quick bucks?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of fast-growing"
      ],
      "id": "en-fastgrowing-en-adj-S0BiWQYL",
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      "tags": [
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  "word": "fastgrowing"
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{
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      "expansion": "fastgrowing (not comparable)",
      "name": "en-adj"
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  "lang": "English",
  "lang_code": "en",
  "pos": "adj",
  "senses": [
    {
      "alt_of": [
        {
          "word": "fast-growing"
        }
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          "ref": "1988 January 15, C.C. Pyle, “Our Bodies, Their Selves”, in Chicago Reader:",
          "text": "So, you want to get in on this fastgrowing opportunity for spiritual enlightenment and quick bucks?",
          "type": "quotation"
        }
      ],
      "glosses": [
        "Alternative form of fast-growing"
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  "word": "fastgrowing"
}