Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English


English definition of “opalescent”


adjective     /ˌəʊ.pəlˈes.ənt/ US  /ˌoʊ-/ literary
describes something that reflects light and changes colour like an opal : the opalescent scales of a fish Monochrome 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)
Focus on the pronunciation of opalescent

Translations of “opalescent”

Word of the Day


a good knowledge of something, or the fact that you know it so well

Word of the Day


Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More