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5 definitions found
 for jiffy
From The Collaborative International Dictionary of English v.0.48 :

  Jiffy \Jif"fy\, n. [Perh. corrupt. fr. gliff.] [Written also
     giffy.]
     A moment; an instant; as, I will be ready in a jiffy.
     [Colloq.] --J. & H. Smith.
     [1913 Webster]

From WordNet (r) 3.0 (2006) :

  jiffy
      n 1: a very short time (as the time it takes the eye to blink or
           the heart to beat); "if I had the chance I'd do it in a
           flash" [syn: blink of an eye, flash, heartbeat,
           instant, jiffy, split second, trice, twinkling,
           wink, New York minute]

From Moby Thesaurus II by Grady Ward, 1.0 :

  28 Moby Thesaurus words for "jiffy":
     breath, breathing, coup, crack, flash, half a jiffy, half a mo,
     half a second, half a shake, instant, jiff, microsecond,
     millisecond, minute, moment, sec, second, shake, split second,
     stroke, tick, trice, twink, twinkle, twinkling, twitch, two shakes,
     wink
  
  

From The Jargon File (version 4.4.7, 29 Dec 2003) :

  jiffy
   n.
  
      1. The duration of one tick of the system clock on your computer (see tick
      ). Often one AC cycle time (1/60 second in the U.S. and Canada, 1/50 most
      other places), but more recently 1/100 sec has become common. ?The swapper
      runs every 6 jiffies? means that the virtual memory management routine is
      executed once for every 6 ticks of the clock, or about ten times a second.
  
      2. Confusingly, the term is sometimes also used for a 1-millisecond wall
      time interval.
  
      3. Even more confusingly, physicists semi-jokingly use ?jiffy? to mean the
      time required for light to travel one foot in a vacuum, which turns out to
      be close to one nanosecond. Other physicists use the term for the
      quantum-nechanical lower bound on meaningful time lengths,
  
      4. Indeterminate time from a few seconds to forever. ?I'll do it in a jiffy
      ? means certainly not now and possibly never. This is a bit contrary to the
      more widespread use of the word. Oppose nano. See also Real Soon Now.
  

From The Free On-line Dictionary of Computing (30 December 2018) :

  jiffy
  
     1. The duration of one tick of the computer's system
     clock.  Often one AC cycle time (1/60 second in the US and
     Canada, 1/50 most other places), but more recently 1/100 sec
     has become common.
  
     2. Confusingly, the term is sometimes also used for a
     1-millisecond wall time interval.  Even more confusingly,
     physicists semi-jokingly use "jiffy" to mean the time required
     for light to travel one foot in a vacuum, which turns out to
     be close to one *nanosecond*.
  
     [{Jargon File]
  
     (2002-03-02)
  

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