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irisation

[ ahy-ri-sey-shuhn ]
/ ˌaɪ rɪˈseɪ ʃən /
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noun
the effect or quality of being iridescent; iridescence.
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Origin of irisation

First recorded in1850–55; iris + -ation
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
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