Dream-like visions can be called a phantasmagoria. If you've ever had a very high fever, you might have experienced seeing a phantasmagoria of strange images in your half-awake, feverish state.

The strange, hallucinatory images you might see in a dream are a phantasmagoria. Even when you're awake, if you see odd or fantastic things — either real or imagined — they're a phantasmagoria. The word was invented by a French dramatist in 1801, who used the Greek word for "image," phantasma to make the French word phantasmagorie. The word referred to a "magic lantern" show, which in the 1800s was a popular display of projected images.

Definitions of phantasmagoria

n a constantly changing medley of real or imagined images (as in a dream)

Type of:
internal representation, mental representation, representation
a presentation to the mind in the form of an idea or image

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