'hallucination' originates from Latin, specifically the word 'hallucinari,' where 'hallucin-' meant 'to wander in the mind.'

'hallucinari' transformed into the French word 'hallucination,' and eventually became the modern English word 'hallucination' through Middle English.

Initially, it meant 'to wander in the mind,' but over time it evolved into its current meaning of 'perceiving something not present.'