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See also: realtime and real time


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Alternative forms[edit]


From real time.


  • IPA(key): /ˈɹiːəltaɪm/, /ˈɹiːltaɪm/
  • Hyphenation: real-time


real-time (not comparable)

  1. Communicated as the events being responded to occur; communicated or proceeding without much delay.
    Coordinate terms: instantaneous, synchronous
    • 2001, Automotive Engineering International:
      It will provide a wireless navigation service that can deliver turn-by-turn route guidance and real-time traffic and weather information. Motorola is the first company to create such a solution, []
    • 2004, William J. Mann, Gay Pride: A Celebration Of All Things Gay And Lesbian, Citadel Press, →ISBN:
      Audiences tolerate the idea of Roxy Hart turning from a “real-time” conversation with her husband or lawyer and launching into a song about her dreams and ambitions. And in the old days, movie audiences did the same: Judy Garland could ...
    • 2013, Michael Herman, Intelligence Services in the Information Age, Routledge, →ISBN:
      This may nevertheless require some re-drawing of boundaries, to integrate real- time or near-real-time intelligence collection with the other means of locating, identifying and tracking major military equipment and units.
    • 2014, John Sandford, Deadline: A Virgil Flowers Novel, Penguin, →ISBN, page 167:
      If not real-time, in-person backup, he at least needed to tell Davenport what was going on, and where he was headed.
    • 2020 December 30, Paul Stephen, “Chirk station is truly blooming”, in Rail, page 48:
      All signage in and around the station is bilingual in Welsh and English, while station announcements and passenger information screens provide real-time information.
  2. (computing) Of a system: that responds to events or signals within a predictable time after their occurrence; specifically the response time must be within the maximum allowed, but is typically synchronous.
    • 2019 November 6, “Network News”, in Rail, page 23:
      The projects, which are due to start in November, are: Real-time prediction and mitigation of disruption through personalised passenger communications - [...]


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