hallucination

Meanings

1. 1
   noun

   a perception of something not actually present, often from illness or drugs

   The fever brought on vivid hallucinations of voices in the empty room.

From Latin hallūcinātiō, hallūcinātiōnem ('a wandering of the mind'), from hallūcinārī ('to wander in mind, dream'), an alteration of ālūcinārī, perhaps influenced by Ancient Greek alýein ('to be distraught').

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