jet lag
noun
: a condition that is characterized by various psychological and physiological effects (such as fatigue and irritability), occurs following long flight through several time zones, and probably results from disruption of circadian rhythms in the human body
Temporary fatigue, drowsiness, and loss of concentration are typical symptoms of isolated bouts of jet lag …—
Jessa Netting
Jessa Netting
Examples of jet lag in a Sentence
I had bad jet lag after that last trip overseas.
Recent Examples on the Web
And when jet lag snarls your normal rest pattern, the window views and a cup of traditional Chinese tea awaiting each guest’s arrival become a pleasant distraction.
—Condé Nast, Condé Nast Traveler, 12 May 2026
As interest in wellness retreats USA travelers can actually fly or drive to (no passport, no jet lag) keeps climbing, The Ranch Malibu has become the name that keeps surfacing on celebrity Instagram feeds and best-of lists alike.
—Lauren Schuster, Sacbee.com, 11 May 2026
Support Natural Circadian Rhythm When traveling across three or more time zones, your circadian rhythm (your 24-hour internal clock) can't immediately adjust to the new time zone's light-dark cycle, resulting in jet lag.
—Anna Giorgi, Verywell Health, 6 May 2026
No transatlantic jet lag — just a drive (or a short flight) to a city that feels like Old Europe with better poutine.
—Hanna Wickes, Kansas City Star, 30 Apr. 2026
See All Example Sentences for jet lag
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Condé Nast, Condé Nast Traveler, 12 May 2026
As interest in wellness retreats USA travelers can actually fly or drive to (no passport, no jet lag) keeps climbing, The Ranch Malibu has become the name that keeps surfacing on celebrity Instagram feeds and best-of lists alike.
—Lauren Schuster, Sacbee.com, 11 May 2026
Support Natural Circadian Rhythm When traveling across three or more time zones, your circadian rhythm (your 24-hour internal clock) can't immediately adjust to the new time zone's light-dark cycle, resulting in jet lag.
—Anna Giorgi, Verywell Health, 6 May 2026
No transatlantic jet lag — just a drive (or a short flight) to a city that feels like Old Europe with better poutine.
—Hanna Wickes, Kansas City Star, 30 Apr. 2026
See All Example Sentences for jet lag
Cite this Entry
“Jet lag.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/jet%20lag. Accessed 16 May. 2026.
Copy CitationMedical Definition
jet lag
noun
: a condition that is characterized by various psychological and physiological effects (as fatigue and irritability), occurs following long flight through several time zones, and probably results from disruption of circadian rhythms in the human body
called also jet fatigue
jet-lagged
adjective
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Merriam-Webster unabridged
