"trifid cipher" meaning in All languages combined

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  "lang_code": "en",
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          "name": "Cryptography",
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      "examples": [
        {
          "text": "Coordinate term: bifid cipher"
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      "glosses": [
        "A classical cipher that extends the earlier bifid cipher with the use of trigrams."
      ],
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      "raw_glosses": [
        "(cryptography) A classical cipher that extends the earlier bifid cipher with the use of trigrams."
      ],
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        "computing",
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  "word": "trifid cipher"
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        "A classical cipher that extends the earlier bifid cipher with the use of trigrams."
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        "(cryptography) A classical cipher that extends the earlier bifid cipher with the use of trigrams."
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