"A und O" meaning in German

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  "etymology_text": "From Ancient Greek. From the biblical book of Revelation, verses 1:8 and 22:13. The expression refers to God as “the beginning and the end”, the letter omega being the last of the Greek alphabet.",
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  "lang_code": "de",
  "pos": "noun",
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          "english": "Good charcoal is the most important part of barbecuing.",
          "text": "Gute Kohle ist das A und O beim Grillen.",
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        "that which is important; that which matters; a sine qua non"
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        "(colloquial) that which is important; that which matters; a sine qua non"
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        "alpha and omega"
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  "lang_code": "de",
  "pos": "noun",
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        {
          "english": "Good charcoal is the most important part of barbecuing.",
          "text": "Gute Kohle ist das A und O beim Grillen.",
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        "that which is important; that which matters; a sine qua non"
      ],
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