Meaning of the word hallucination in English

What does hallucination mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

hallucination

US /həˌluː.səˈneɪ.ʃən/
UK /həˌluː.sɪˈneɪ.ʃən/
"hallucination" picture

Noun

an experience involving the apparent perception of something not present

Example:
He suffered from vivid hallucinations during his illness.
The drug can cause severe hallucinations.