"lookahead" meaning in English

See lookahead in All languages combined, or Wiktionary

Noun

Audio: en-uk-lookahead.ogg Forms: lookaheads [plural]
Etymology: Deverbal from look ahead. Etymology templates: {{deverbal|en|look ahead}} Deverbal from look ahead Head templates: {{en-noun|~}} lookahead (countable and uncountable, plural lookaheads)
  1. (computing, software compilation) The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed. Tags: countable, uncountable Categories (topical): Compilation, Computing
    Sense id: en-lookahead-en-noun-l5zwV86a Categories (other): English deverbals, English entries with incorrect language header, Pages with 1 entry, Pages with entries Disambiguation of English deverbals: 60 40 Disambiguation of English entries with incorrect language header: 69 31 Disambiguation of Pages with 1 entry: 71 29 Disambiguation of Pages with entries: 75 25 Topics: computing, engineering, mathematics, natural-sciences, physical-sciences, sciences, software-compilation
  2. (regular expressions) The analysis of the subsequent characters before the regular expression is matched. Tags: countable, uncountable Categories (topical): Regular expressions Hypernyms (regular expressions): lookaround Hyponyms (regular expressions): negative lookahead, positive lookahead, carry-lookahead
    Sense id: en-lookahead-en-noun-7FWVywHu Disambiguation of 'regular expressions': 40 60 Disambiguation of 'regular expressions': 40 60
The following are not (yet) sense-disambiguated
Derived forms: lookahead time Related terms: lookaside, lookbehind, runahead

Inflected forms

{
  "derived": [
    {
      "_dis1": "0 0",
      "word": "lookahead time"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "look ahead"
      },
      "expansion": "Deverbal from look ahead",
      "name": "deverbal"
    }
  ],
  "etymology_text": "Deverbal from look ahead.",
  "forms": [
    {
      "form": "lookaheads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "lookahead (countable and uncountable, plural lookaheads)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "_dis1": "0 0",
      "word": "lookaside"
    },
    {
      "_dis1": "0 0",
      "word": "lookbehind"
    },
    {
      "_dis1": "0 0",
      "word": "runahead"
    }
  ],
  "senses": [
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Compilation",
          "orig": "en:Compilation",
          "parents": [
            "Computing",
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Computing",
          "orig": "en:Computing",
          "parents": [
            "Technology",
            "All topics",
            "Fundamental"
          ],
          "source": "w"
        },
        {
          "_dis": "60 40",
          "kind": "other",
          "name": "English deverbals",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "69 31",
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w+disamb"
        },
        {
          "_dis": "71 29",
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w+disamb"
        },
        {
          "_dis": "75 25",
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w+disamb"
        }
      ],
      "examples": [
        {
          "text": "Our computer chess program uses lookahead to avoid difficult endgames.",
          "type": "example"
        }
      ],
      "glosses": [
        "The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed."
      ],
      "id": "en-lookahead-en-noun-l5zwV86a",
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "software",
          "software"
        ],
        [
          "compilation",
          "compilation"
        ],
        [
          "analysis",
          "analysis"
        ],
        [
          "in advance",
          "in advance"
        ],
        [
          "subsequent",
          "subsequent"
        ],
        [
          "decision",
          "decision"
        ],
        [
          "branch",
          "branch"
        ],
        [
          "algorithm",
          "algorithm"
        ],
        [
          "follow",
          "follow"
        ]
      ],
      "raw_glosses": [
        "(computing, software compilation) The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "software-compilation"
      ]
    },
    {
      "categories": [
        {
          "kind": "topical",
          "langcode": "en",
          "name": "Regular expressions",
          "orig": "en:Regular expressions",
          "parents": [
            "Computing",
            "Programming",
            "Technology",
            "Software engineering",
            "All topics",
            "Computer science",
            "Engineering",
            "Software",
            "Fundamental",
            "Sciences",
            "Applied sciences",
            "Media",
            "Communication"
          ],
          "source": "w"
        }
      ],
      "glosses": [
        "The analysis of the subsequent characters before the regular expression is matched."
      ],
      "hypernyms": [
        {
          "_dis1": "40 60",
          "sense": "regular expressions",
          "word": "lookaround"
        }
      ],
      "hyponyms": [
        {
          "_dis1": "40 60",
          "sense": "regular expressions",
          "word": "negative lookahead"
        },
        {
          "_dis1": "40 60",
          "sense": "regular expressions",
          "word": "positive lookahead"
        },
        {
          "_dis1": "40 60",
          "sense": "regular expressions",
          "word": "carry-lookahead"
        }
      ],
      "id": "en-lookahead-en-noun-7FWVywHu",
      "links": [
        [
          "regular expression",
          "regular expression"
        ],
        [
          "analysis",
          "analysis"
        ],
        [
          "character",
          "character"
        ]
      ],
      "qualifier": "regular expressions",
      "raw_glosses": [
        "(regular expressions) The analysis of the subsequent characters before the regular expression is matched."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-uk-lookahead.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/30/En-uk-lookahead.ogg/En-uk-lookahead.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/30/En-uk-lookahead.ogg"
    }
  ],
  "word": "lookahead"
}
{
  "categories": [
    "English countable nouns",
    "English deverbals",
    "English entries with incorrect language header",
    "English lemmas",
    "English nouns",
    "English uncountable nouns",
    "Pages with 1 entry",
    "Pages with entries"
  ],
  "derived": [
    {
      "word": "lookahead time"
    }
  ],
  "etymology_templates": [
    {
      "args": {
        "1": "en",
        "2": "look ahead"
      },
      "expansion": "Deverbal from look ahead",
      "name": "deverbal"
    }
  ],
  "etymology_text": "Deverbal from look ahead.",
  "forms": [
    {
      "form": "lookaheads",
      "tags": [
        "plural"
      ]
    }
  ],
  "head_templates": [
    {
      "args": {
        "1": "~"
      },
      "expansion": "lookahead (countable and uncountable, plural lookaheads)",
      "name": "en-noun"
    }
  ],
  "hypernyms": [
    {
      "sense": "regular expressions",
      "word": "lookaround"
    }
  ],
  "hyponyms": [
    {
      "sense": "regular expressions",
      "word": "negative lookahead"
    },
    {
      "sense": "regular expressions",
      "word": "positive lookahead"
    },
    {
      "sense": "regular expressions",
      "word": "carry-lookahead"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "related": [
    {
      "word": "lookaside"
    },
    {
      "word": "lookbehind"
    },
    {
      "word": "runahead"
    }
  ],
  "senses": [
    {
      "categories": [
        "English terms with usage examples",
        "en:Compilation",
        "en:Computing"
      ],
      "examples": [
        {
          "text": "Our computer chess program uses lookahead to avoid difficult endgames.",
          "type": "example"
        }
      ],
      "glosses": [
        "The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed."
      ],
      "links": [
        [
          "computing",
          "computing#Noun"
        ],
        [
          "software",
          "software"
        ],
        [
          "compilation",
          "compilation"
        ],
        [
          "analysis",
          "analysis"
        ],
        [
          "in advance",
          "in advance"
        ],
        [
          "subsequent",
          "subsequent"
        ],
        [
          "decision",
          "decision"
        ],
        [
          "branch",
          "branch"
        ],
        [
          "algorithm",
          "algorithm"
        ],
        [
          "follow",
          "follow"
        ]
      ],
      "raw_glosses": [
        "(computing, software compilation) The analysis in advance of subsequent decisions that would be made if a particular branch of an algorithm was followed."
      ],
      "tags": [
        "countable",
        "uncountable"
      ],
      "topics": [
        "computing",
        "engineering",
        "mathematics",
        "natural-sciences",
        "physical-sciences",
        "sciences",
        "software-compilation"
      ]
    },
    {
      "categories": [
        "en:Regular expressions"
      ],
      "glosses": [
        "The analysis of the subsequent characters before the regular expression is matched."
      ],
      "links": [
        [
          "regular expression",
          "regular expression"
        ],
        [
          "analysis",
          "analysis"
        ],
        [
          "character",
          "character"
        ]
      ],
      "qualifier": "regular expressions",
      "raw_glosses": [
        "(regular expressions) The analysis of the subsequent characters before the regular expression is matched."
      ],
      "tags": [
        "countable",
        "uncountable"
      ]
    }
  ],
  "sounds": [
    {
      "audio": "en-uk-lookahead.ogg",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/3/30/En-uk-lookahead.ogg/En-uk-lookahead.ogg.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/3/30/En-uk-lookahead.ogg"
    }
  ],
  "word": "lookahead"
}

Download raw JSONL data for lookahead meaning in English (2.7kB)


This page is a part of the kaikki.org machine-readable English dictionary. This dictionary is based on structured data extracted on 2024-12-21 from the enwiktionary dump dated 2024-12-04 using wiktextract (d8cb2f3 and 4e554ae). The data shown on this site has been post-processed and various details (e.g., extra categories) removed, some information disambiguated, and additional data merged from other sources. See the raw data download page for the unprocessed wiktextract data.

If you use this data in academic research, please cite Tatu Ylonen: Wiktextract: Wiktionary as Machine-Readable Structured Data, Proceedings of the 13th Conference on Language Resources and Evaluation (LREC), pp. 1317-1325, Marseille, 20-25 June 2022. Linking to the relevant page(s) under https://kaikki.org would also be greatly appreciated.