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Added 9 October 2026

hallucination

/həˌluːsɪˈneɪʃən/ noun

Latin root: hallucinatus Wiktionary

noun Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about hallucination at Wordnik → Where our words come from →

Illusory perception; a common symptom of severe mental disorder.
A mistaken or unfounded opinion or idea.
he has delusions of competence
An object perceived during a hallucinatory episode.
he refused to believe that the angel was a hallucination

Origin

From hallucinate + -ion, from Latin hallucinatus. Compare French hallucination. The first known usage in the English language is from Sir Thomas Browne.

From Wiktionary, via Kaikki.org (CC BY-SA)

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