kaleidoscope

American  

[kuh-lahy-duh-skohp] / kəˈlaɪ dəˌskoʊp /

noun

1. an optical instrument in which bits of glass, held loosely at the end of a rotating tube, are shown in continually changing symmetrical forms by reflection in two or more mirrors set at angles to each other.

2. a continually changing pattern of shapes and colors.

3. a continually shifting pattern, scene, or the like.

   The 1920s were a kaleidoscope of fads and fashions.

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kaleidoscope British  

/ kəˌlaɪdəˈskɒpɪk, kəˈlaɪdəˌskəʊp /

noun

1. an optical toy for producing symmetrical patterns by multiple reflections in inclined mirrors enclosed in a tube. Loose pieces of coloured glass, paper, etc, are placed between transparent plates at the far end of the tube, which is rotated to change the pattern

2. any complex pattern of frequently changing shapes and colours

3. a complicated set of circumstances

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Other Word Forms

• kaleidoscopic adjective
• kaleidoscopically adverb

Etymology

Origin of kaleidoscope

1817; < Greek kal ( ós ) beautiful + eîdo ( s ) shape + -scope

Explanation

A kaleidoscope is a child's toy, a tube with a series of mirrors at one end that reflect multiple images of colored bits of glass or toys that move, creating constantly-changing images as you turn the tube. The toy kaleidoscope was invented around 1817 by Sir David Brewster. He took the name for his ever-changing picture tube from the Greek words kalos, "beautiful," combined with eidos, "shape." The "scope" part came from the Greek verb skopein, "to look," which can be found in many words referring to looking, including "telescope" and "microscope." The poet Lord Byron broadened the meaning of the word, giving it the sense of a "constantly changing pattern."

Example Sentences

Fireworks flared in a kaleidoscope of brilliant colours.

From BBC • Feb. 11, 2026

Instead, Coogler methodically reminds the audience that this country has always been a multiracial kaleidoscope by meticulously portraying life in America just a century ago.

From Los Angeles Times • Jan. 24, 2026

"Instead of becoming a truly global power, Europe remains a beautiful but fragmented kaleidoscope of small and middle powers," he said during his trip to Davos.

From Barron's • Jan. 23, 2026

"Instead of becoming a truly global power, Europe remains a beautiful but fragmented kaleidoscope of small and middle powers," he said.

From Barron's • Jan. 22, 2026

Hand-painted plates boast a kaleidoscope of patisserie and petit-cakes pierced with flaming sparklers.

From "The Belles" by Dhonielle Clayton