"qu-" meaning in English

{
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        "1": "en",
        "2": "qubit"
      },
      "expansion": "Back-formation from qubit",
      "name": "back-form"
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  ],
  "etymology_text": "Back-formation from qubit.",
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      "args": {
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        "2": "prefix",
        "head": "",
        "sort": ""
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      "expansion": "qu-",
      "name": "head"
    },
    {
      "args": {},
      "expansion": "qu-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English back-formations",
          "parents": [],
          "source": "w"
        },
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        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Quantum computing",
          "orig": "en:Quantum computing",
          "parents": [
            "Computing",
            "Quantum mechanics",
            "Technology",
            "Physics",
            "All topics",
            "Sciences",
            "Fundamental"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "quantum computing"
      ],
      "id": "en-qu--en-prefix-VN4BGvfY",
      "links": [
        [
          "quantum computing",
          "quantum computing"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "qu-"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "qubit"
      },
      "expansion": "Back-formation from qubit",
      "name": "back-form"
    }
  ],
  "etymology_text": "Back-formation from qubit.",
  "head_templates": [
    {
      "args": {
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        "2": "prefix",
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      "expansion": "qu-",
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    },
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      "args": {},
      "expansion": "qu-",
      "name": "en-prefix"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "prefix",
  "senses": [
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        "English back-formations",
        "English entries with incorrect language header",
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        "en:Quantum computing"
      ],
      "glosses": [
        "quantum computing"
      ],
      "links": [
        [
          "quantum computing",
          "quantum computing"
        ]
      ],
      "tags": [
        "morpheme"
      ]
    }
  ],
  "word": "qu-"
}