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English definition of “opalescent”

opalescent

adjective     /ˌəʊ.pəlˈes.ənt/ US  /ˌoʊ-/ literary
describes something that reflects light and changes colour like an opal: the opalescent scales of a fishMonochrome and multi-colouredThe qualities of light opalescence     /-əns/ noun [U]
(Definition of opalescent adjective from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
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