- a general feeling of fatigue and disorientation often experienced by travellers by jet aircraft who cross several time zones in relatively few hours
WordReference Random House Learner's Dictionary of American English © 2020
ˈjet ˌlag or ˈjetˌlag, n. [uncountable]WordReference Random House Unabridged Dictionary of American English © 2020
Pathologya feeling of fatigue or confusion when the body's normal biological rhythms have been affected after a long flight through several time zones.
Pathologya temporary disruption of the body's normal biological rhythms after high-speed air travel through several time zones. Also, jet′lag′.
Collins Concise English Dictionary © HarperCollins Publishers::
jet lag n