hallucination

Meaning

Noun

• A sensory perception of something that does not exist, often arising from disorder of the nervous system, as in delirium tremens; a delusion.
• The act of hallucinating; a wandering of the mind; an error, mistake or blunder.

Origin

• Derives from the verb hallucinate, from Latin hallucinatus. Compare French hallucination. The first known usage in the English language is from Sir Thomas Browne.