Definition of illusion
1a obsolete : the action of deceivingb (1) : the state or fact of being intellectually deceived or misled : misapprehension (2) : an instance of such deception
2a (1) : a misleading image presented to the vision (2) : something that deceives or misleads intellectuallyb (1) : perception of something objectively existing in such a way as to cause misinterpretation of its actual nature (2) : hallucination 1 (3) : a pattern capable of reversible perspective
3 : a fine plain transparent bobbinet or tulle usually made of silk and used for veils, trimmings, and dresses
illusionalplay \i-ˈlüzh-nəl, -ˈlü-zhə-nəl\ adjective
Examples of illusion in a Sentence
The video game is designed to give the illusion that you are in control of an airplane.
They used paint to create the illusion of metal.
She says that all progress is just an illusion.
Recent Examples of illusion from the Web
Mr. Mattis had scars from the heavy losses borne by the Marines there, while General McMaster’s exposure to rampant corruption would rob him of any illusions that a few thousand new troops could turn around Afghanistan.
The last role to be filled was Moonstar, a character who is Native American and who has the power to create illusions drawn from the fears and desires of a person's mind.
Lights on rotating wheels create what scientists call persistence of vision, which is an illusion.
Pollini's metal had a gleam that attracted for its strength, unblemished polish and illusion of effortlessness.
And if the resulting plan just so happens to redistribute trillions of dollars from the government’s coffers to America’s wealthiest families, that’s a pure accident — or else, a mathematical illusion.
No victory, however satisfying, can redeem the disappointment from over a week of losing, and no one wearing the home white at Camden Yards on Memorial Day was under that illusion.
Because it’s under the illusion that this is America.
The whole experience gave an intense illusion, not of information, but of personality.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'illusion'. Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
allusion and illusion
Allusion and illusion may share some portion of their ancestry (both words come in part from the Latin word ludere, meaning “to play”), and sound quite similar, but they are distinct words with very different meanings. An allusion is an indirect reference, whereas an illusion is something that is unreal or incorrect. Each of the nouns has a related verb form: allude “to refer indirectly to,” and illude (not a very common word), which may mean “to delude or deceive” or “to subject to an illusion.”
Origin and Etymology of illusion
Middle English, from Anglo-French, from Late Latin illusion-, illusio, from Latin, action of mocking, from illudere to mock at, from in- + ludere to play, mock — more at ludicrous
First Known Use: 14th century
Synonym Discussion of illusion
ILLUSION Defined for English Language Learners
Definition of illusion for English Language Learners
: something that looks or seems different from what it is : something that is false or not real but that seems to be true or real
: an incorrect idea : an idea that is based on something that is not true
ILLUSION Defined for Kids
Definition of illusion for Students
1 : something that is false or unreal but seems to be true or real The video game creates the illusion of flying.
2 : a mistaken idea She had no illusions about her chances of winning.
Medical Definition of illusion
illusional\-ˈüzh-nəl, -ən-əl\play adjective
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