illusion

[ ih-loo-zhuhn ]

noun

1. something that deceives by producing a false or misleading impression of reality.

   Synonyms: chimera, fantasy, aberration

2. the state or condition of being deceived; misapprehension.
3. an instance of being deceived.
4. Psychology. a perception, as of visual stimuli optical illusion, that represents what is perceived in a way different from the way it is in reality.
5. a very thin, delicate tulle of silk or nylon having a cobwebbed appearance, for trimmings, veilings, and the like.
6. Obsolete. the act of deceiving; deception; delusion.

illusion

/ ɪˈluːʒən /

noun

1. a false appearance or deceptive impression of reality

   the mirror gives an illusion of depth

2. a false or misleading perception or belief; delusion

   he has the illusion that he is really clever

3. psychol a perception that is not true to reality, having been altered subjectively in some way in the mind of the perceiver See also hallucination
4. a very fine gauze or tulle used for trimmings, veils, etc

Derived Forms

• ilˈlusionary, adjective
• ilˈlusioned, adjective

Other Words From

• il·lusioned adjective

Word History and Origins

Origin of illusion¹

First recorded in 1300–50; Middle English from Latin illūsiōn- (stem of illūsiō ) “irony, mocking,” equivalent to illūs(us), past participle of illūdere “to mock, ridicule” ( il- il- ¹ + lūd- play ( ludicrous ) + -tus past participle suffix) + -iōn- -ion

Word History and Origins

Origin of illusion¹

C14: from Latin illūsiō deceit, from illūdere; see illude

Synonym Study

illusion, hallucination, delusion refer to false perceptions or ideas. An illusion is a false mental image produced by misinterpretation of things that actually exist: A mirage is an illusion produced by reflection of light against the sky. A hallucination is a perception of a thing or quality that has no physical counterpart: Under the influence of LSD, Terry had hallucinations that the living-room floor was rippling. A delusion is a persistent false belief: A paranoiac has delusions of persecution.

Example Sentences

“It's actually a transparent skin on the top of the metal, and light interference gives the illusion of this kind of light bronzy colour to it.”

From BBC

Golestani shines as a woman clinging to her illusions — about a wife’s place, about women’s second-class status — because she’s never permitted herself to think any other way.

From Los Angeles Times

But he is under no illusion about the risk he is himself in by helping other soldiers to flee.

From BBC

"This document is little more than an optical illusion. This, in our opinion, will not address the enormity of the challenge we all face."

From BBC

Any marriage “choice” between nobles is an illusion.

From Salon

Related Words

• confusion
• deception
• delusion
• fantasy
• hallucination
• image
• misconception
• myth
• pipe dream
• semblance