"undouble" meaning in English

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "double"
      },
      "expansion": "un- + double",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + double",
  "forms": [
    {
      "form": "undoubles",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undoubling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undoubled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undoubled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undouble (third-person singular simple present undoubles, present participle undoubling, simple past and past participle undoubled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English terms prefixed with un-",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "ref": "2014, Alexander A. Stepanov, Daniel E. Rose, From Mathematics to Generic Programming, page 54",
          "text": "So to simulate this, the iterative version needs to repeatedly “undouble” the value, which it will do by calling a function half.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To undo the doubling of; to unfold, or render single again."
      ],
      "id": "en-undouble-en-verb-jUVkt0qh",
      "links": [
        [
          "unfold",
          "unfold"
        ],
        [
          "single",
          "single"
        ]
      ],
      "raw_glosses": [
        "(transitive) To undo the doubling of; to unfold, or render single again."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "undouble"
}

{
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "un",
        "3": "double"
      },
      "expansion": "un- + double",
      "name": "prefix"
    }
  ],
  "etymology_text": "un- + double",
  "forms": [
    {
      "form": "undoubles",
      "tags": [
        "present",
        "singular",
        "third-person"
      ]
    },
    {
      "form": "undoubling",
      "tags": [
        "participle",
        "present"
      ]
    },
    {
      "form": "undoubled",
      "tags": [
        "participle",
        "past"
      ]
    },
    {
      "form": "undoubled",
      "tags": [
        "past"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {},
      "expansion": "undouble (third-person singular simple present undoubles, present participle undoubling, simple past and past participle undoubled)",
      "name": "en-verb"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "English entries with incorrect language header",
        "English lemmas",
        "English terms prefixed with un-",
        "English terms with quotations",
        "English transitive verbs",
        "English verbs",
        "Quotation templates to be cleaned"
      ],
      "examples": [
        {
          "ref": "2014, Alexander A. Stepanov, Daniel E. Rose, From Mathematics to Generic Programming, page 54",
          "text": "So to simulate this, the iterative version needs to repeatedly “undouble” the value, which it will do by calling a function half.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "To undo the doubling of; to unfold, or render single again."
      ],
      "links": [
        [
          "unfold",
          "unfold"
        ],
        [
          "single",
          "single"
        ]
      ],
      "raw_glosses": [
        "(transitive) To undo the doubling of; to unfold, or render single again."
      ],
      "tags": [
        "transitive"
      ]
    }
  ],
  "word": "undouble"
}