Etymology
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jet lag (n.)

also jetlag, 1966, from jet (n.1) in the "airplane" sense + lag (n.). Also known in early days as time zone syndrome.

updated on May 24, 2017

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Definitions of jet lag from WordNet

jet lag (n.)
fatigue and sleep disturbance resulting from disruption of the body's normal circadian rhythm as a result of jet travel;
Etymologies are not definitions. From wordnet.princeton.edu, not affiliated with etymonline.

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