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top: straight horizontal rules appear curved
bottom: a gray box against a black background appears lighter than the same gray box against a white background


a. An erroneous perception of reality: Mirrors gave the illusion of spaciousness.
b. An erroneous concept or belief: The notion that money can buy happiness is an illusion.
2. The condition of being deceived by a false perception or belief: spent months flailing about in illusion.
3. Something that is erroneously perceived or construed: The animal in the shadows turned out to be an illusion.
4. A fine transparent net fabric, used for dresses or trimmings.

[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; see in-2 + lūdere, to play; see leid- in Indo-European roots.]

il·lu′sion·al, il·lu′sion·ar′y (-zhə-nĕr′ē) adj.
il·lu′sion·less adj.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.illusionary - marked by or producing illusion; "illusionary stage effects"
unreal - lacking in reality or substance or genuineness; not corresponding to acknowledged facts or criteria; "ghosts and other unreal entities"; "unreal propaganda serving as news"


References in classic literature ?
Freedom from the domination of the great tradition could only be found by seeking new subjects, and such freedom was really only illusionary, since romantic subjects alone are suitable for epic treatment.
British artist Alex Chinneck designed a gravity-defying illusionary piece of artwork which saw the artist suspend a Corsa 15ft in the air at London's Southbank Centre.
Exploring the fault lines where media, religion, politics, and education impinge on our intimate lives, "Unscrewed" breaks down the causes and signs of illusionary empowerment, then gives readers tools to take it on themselves.
Kinaata will support IOM Ghanas Aware Migrants Information Campaign through the release of a new song aimed at encouraging Ghanaian youth to value their lives and not take unnecessary risks in chasing illusionary greener pastures.
First there was an astronomy session followed by a Mobius Strip Workshop; a Mobius strip is a single strip of paper where one half is turned 180 degrees and the other is glued the shape is impossible to do in 3D, this is why in paintings and paper are able to pull off illusionary pieces.
A Optical Illusionary Painting B Trompe l'oeil C Surrealism D Dadaism 5.
It is illusionary to believe that those who once proved with their actions that they breached the agreements are unlikely to have a change of hearts and attitude and make things right this time.
We are living today a sort of illusionary stability, we should make such stability real," said Minister Bassil.
Otherwise, all his development schemes will be built over the weak foundation based on the quick sands of illogical thinking and illusionary concepts that have taken deep roots into the minds of the masses over hundreds of years.
Other problems include the journalist's lack of preparation for the topics they are covering and the "flowery" style of writing in Arabic which creates a distant, and illusionary relationship between the media and audience, said Lootah.
She said warmongers and the so-called advocates of diplomacy in the US both rely on illusionary, dangerous and horrific ideas which have so far inflicted irreparable damage on the world and are today one of the root causes of international insecurity.
Even with my pinky dangling, the palm-filling grip gives me full control of the front of the rifle without the illusionary lack of confidence often given when short handgun grips leave my little finger dangling.