"narrowcasting" meaning in English

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        "present participle and gerund of narrowcast"
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  "word": "narrowcasting"
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  "lang_code": "en",
  "pos": "noun",
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          "ref": "2021 February 2, Katharine Murphy, The Guardian:",
          "text": "Kelly genuinely believes his views about the relative merits of various therapies are correct. He intends to keep crusading. That means his feelings about medical matters have already jumped the barrier between strategic narrowcasting and mainstream news consumption.",
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      "glosses": [
        "The act or practice of narrowcasting."
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  "word": "narrowcasting"
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  "pos": "verb",
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