illusion.
A distortion of sensory perception where real stimuli lead to a false or misleading impression of reality.
Meaning & usage
A distortion of sensory perception where real stimuli lead to a false or misleading impression of reality.
We saw what looked like a tiger among the trees, but it was an illusion caused by the shadows of the branches.
Using artificial additives, scientists can create the illusion of fruit flavours in food.
A misapprehension; a belief in something that is in fact not true.
Jane has this illusion that John is in love with her.
A magician’s trick.
The state of being deceived or misled.
Where this word comes from
From Old French illusion, from Latin illūsiō, from illūdere, from in- (“at, upon”) + lūdere (“to play, mock, trick”). Displaced native Old English dwimmer.
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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.
Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.