opalescence

noun

opal·​es·​cence ˌōpəˈlesᵊn(t)s How to pronounce opalescence (audio)
plural -s
: the quality or state of being opalescent
that mother-of-pearl opalescence which shimmers in the hollowness of certain seashellsJ. C. Powys

Word History

Etymology

opal + -escence

The Ultimate Dictionary Awaits

Expand your vocabulary and dive deeper into language with Merriam-Webster Unabridged.

  1. Expanded definitions
  2. Detailed etymologies
  3. Advanced search tools
  4. All ad-free

Discover what makes Merriam-Webster Unabridged the essential choice for true word lovers.

Start Your Free Trial Now

Browse Nearby Words

Cite this Entry

“Opalescence.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/opalescence. Accessed 26 Dec. 2025.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!