Illusion definition

ĭ-lo͝ozhən
Frequency:
A false idea or conception; belief or opinion not in accord with the facts.
noun
10
2
Something that is erroneously perceived or construed.

The animal in the shadows turned out to be an illusion.

noun
5
1
Illusion is defined as something that tricks the eye.

An example of an illusion is a drawing that can look like an old lady or a vase depending on which part you focus on.

noun
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The definition of an illusion is an idea or something you can see that isn’t real.

An example of an illusion is a magician making someone disappear in a box.

noun
1
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A fine transparent net fabric, used for dresses or trimmings.
noun
1
0
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An erroneous perception of reality.

Mirrors gave the illusion of spaciousness.

noun
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noun
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A delicate, gauzy silk tulle used for veils, etc.
noun
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An unreal, deceptive, or misleading appearance or image.

A large mirror giving the illusion of space in a small room.

noun
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A trick, as one designed or performed by a stage magician, appearing to defy ordinary physical laws.
noun
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A false perception, conception, or interpretation of what one sees, where one is, etc.
noun
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The misleading image resulting in such a false impression.
noun
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(countable) Anything that seems to be something that it is not.

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.

noun
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(countable) A misapprehension; a belief in something that is in fact not true.

Jane has this illusion that John is in love with her.

noun
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(countable) A magician’s trick.
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(uncountable) The state of being deceived or misled.
noun
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The condition of being deceived by a false perception or belief.

Spent months flailing about in illusion.

noun
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1
An erroneous concept or belief.

The notion that money can buy happiness is an illusion.

noun
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1

Other Word Forms

Noun

Singular:
illusion
Plural:
illusions

Origin of illusion

  • Middle English illusioun from Old French from Late Latin illūsiō illūsiōn- from Latin a mocking, irony from illūsus past participle of illūdere to mock in- against in–2 lūdere to play leid- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Old French illusion, from Latin illūsiō, from illūdere, from in- (“at, upon”), + lūdere (“to play, mock, trick”)

    From Wiktionary