dé·jà vu (dā′zhä v)
1. Psychology The illusion of having already experienced something actually being experienced for the first time.
a. An impression of having seen or experienced something before: Old-timers watched the stock-market crash with a distinct sense of déjà vu.
b. Dull familiarity; monotony: the déjà vu of the tabloid headlines.
[French déjà-vu : déjà, already (from Old French des ja, from now on, from des, from + ja, now + from Latin iam) + vu, seen (from Old French veu, from Vulgar Latin vidūtus, alteration of vīsus, past participle of vidēre, to see; see weid- in the Appendix of Indo-European roots).]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.