"a seeing or hearing something which is not there," 1640s, from Latin hallucinationem (nominative hallucinatio), earlier alucinatio, noun of action from past-participle stem of alucinari (see hallucinate). Related: Hallucinations.
his dreams of vast wealth are a hallucination
he refused to believe that the angel was a hallucination
hallow
Halloween
hallows
Hallstatt
hallucinate
hallucination
hallucinatory
hallucinogen
hallucinogenic
hallux
hallway
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