as in opalescent
having a rainbowlike play of colors
the nacreous lining of the shell of a mollusk
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Recent Examples of nacreous
Tiffany has a long-standing history with pearls, both nacreous—from oysters and mollusks—and non-nacreous, like Melo Melo pearls.
—
Stellene Volandes, Town & Country, 20 Feb. 2021
Unfortunately, nacreous clouds also support chemical reactions that convert benign chlorine-containing molecules into a form that destroys Earth’s ozone layer.
—Rebecca Coffey, Discover Magazine, 29 Jan. 2012
Quahogs produce non-nacreous, porcelainlike pearls, according to the Gemological Institute of America.
—Shannon Marvel McNaught, USA TODAY, 16 Aug. 2022
Markov processes include an element of randomness—in this case, the thickness of the outermost nacreous layer—but one that can be influenced by the system’s history.
—Leila Sloman, Popular Mechanics, 28 Feb. 2022
An alternative explanation is that the red skies were the result of nacreous clouds common to that particular latitude.
—Jennifer Ouellette, Ars Technica, 21 May 2020
Also called polar stratospheric clouds (or less precisely, rainbow clouds), nacreous clouds normally only form in high latitudes and at extremely cold temperatures.
—National Geographic, 3 Feb. 2016
The cold air the storm blew in also led to the formation of beautiful nacreous clouds.
—National Geographic, 3 Feb. 2016
Stellene Volandes, Town & Country, 20 Feb. 2021
Unfortunately, nacreous clouds also support chemical reactions that convert benign chlorine-containing molecules into a form that destroys Earth’s ozone layer.
—Rebecca Coffey, Discover Magazine, 29 Jan. 2012
Quahogs produce non-nacreous, porcelainlike pearls, according to the Gemological Institute of America.
—Shannon Marvel McNaught, USA TODAY, 16 Aug. 2022
Markov processes include an element of randomness—in this case, the thickness of the outermost nacreous layer—but one that can be influenced by the system’s history.
—Leila Sloman, Popular Mechanics, 28 Feb. 2022
An alternative explanation is that the red skies were the result of nacreous clouds common to that particular latitude.
—Jennifer Ouellette, Ars Technica, 21 May 2020
Also called polar stratospheric clouds (or less precisely, rainbow clouds), nacreous clouds normally only form in high latitudes and at extremely cold temperatures.
—National Geographic, 3 Feb. 2016
The cold air the storm blew in also led to the formation of beautiful nacreous clouds.
—National Geographic, 3 Feb. 2016
Recent Examples of Synonyms for nacreous
Adjective
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The majestic stillness of the full beaver moon, hovering pink and opalescent in the horizon.—
Jennifer Hope Choi,
Bon Appetit Magazine,
22 Apr. 2025
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The Ellipse required 90 cm of gold wire shaped by hand and 20 shades of opaque and opalescent enamel, while the table clock used over 16 m of gold wire in three different widths and 45 shades of mainly translucent enamel mixed with some semi-translucent or opaque versions of the material.—
Paige Reddinger,
Robb Report,
24 Mar. 2025
Adjective
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While walking through the debris fields in his old neighborhood, Aparicio was drawn to pieces of glass that had morphed into an iridescent color and slumped over from the heat of the fire.—
Sarah Quiñones Wolfson,
Los Angeles Times,
23 Apr. 2025
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And why Passport Properties isn’t just another real estate reality series full of big commissions, enormous egos and iridescent supercars.—
Kitty Finstad,
Forbes.com,
18 Apr. 2025
Adjective
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The Scuderia Ferrari driver’s bold, colorful, and whimsical looks have garnered much attention in the style world and earned him the title of ‘champion of style’ as well.—
Daisy Shaw-Ellis,
Vogue,
25 Apr. 2025
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That colorful language is shared by Chris Goulet, managing partner of Birdsong Brewing.—
Timothy DePeugh,
Charlotte Observer,
25 Apr. 2025
Adjective
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Seen from there, the sandstone pylons of Luxor’s temple rose to an open sky, eternally patient in the dusty, pearlescent light.—
Chris Wallace,
Travel + Leisure,
19 Apr. 2025
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Sure, some are white, black or silver—boring rental fleet colors—but most are finished in black cherry, pearlescent gold from the AMG GT color palette, groovy shades of blue, orange, crazy red, screaming lizard green.—
Mark Ewing,
Forbes.com,
15 Apr. 2025
Cite this Entry
“Nacreous.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/nacreous. Accessed 4 May. 2025.
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