Definition of kaleidoscope
1
: an instrument containing loose bits of colored material (such as glass or plastic) between two flat plates and two plane mirrors so placed that changes of position of the bits of material are reflected in an endless variety of patterns
2
: something resembling a kaleidoscope: such as
a
: a variegated changing pattern or scene
a kaleidoscope of colors
b
: a succession of changing phases or actions
a kaleidoscope of changing fashions
c
: a diverse collection
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Merriam-Webster unabridged
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Time Traveler for kaleidoscope
The first known use of kaleidoscope was in 1817
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