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opalescent

[oh-puh-les-uh nt]
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adjective
  1. exhibiting a play of colors like that of the opal.
  2. having a milky iridescence.

Origin of opalescent

First recorded in 1805–15; opal + -escent
Related formso·pal·es·cence, nouno·pal·es·cent·ly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for opalescent

opalescent

adjective
  1. having or emitting an iridescence like that of an opal
Derived Formsopalescence, noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for opalescent

adj.

1813, from opal + -escent.

Online Etymology Dictionary, © 2010 Douglas Harper

opalescent in Medicine

opalescent

(ō′pə-lĕsənt)
adj.
  1. Resembling an opal in the display of various colors, often used to describe certain bacterial cultures.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.

opalescent in Science

opalescent

[ō′pə-lĕsənt]
  1. Exhibiting a milky iridescence like that of opal.
The American Heritage® Science Dictionary Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.