Definition of iridescence
1
: a lustrous rainbowlike play of color caused by differential refraction of light waves (as from an oil slick, soap bubble, or fish scales) that tends to change as the angle of view changes
2
: a lustrous or attractive quality or effect
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Merriam-Webster unabridged
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Time Traveler for iridescence
The first known use of iridescence was in 1804
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