déjà vu phenomenon
The illusion of having already experienced something actually being experienced for the first time.
An impression of having seen or experienced something before.
Fun With OppositesYou know up is the opposite of down, but do you know the antonyms of ambidextrous and placebo? English isn't always black and white.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.