Try Our Apps


Avoid these words. Seriously.

nacreous cloud

a rarely seen, luminous, iridescent cloud shaped like a cirrus or altocumulus, approximately 15 miles (24 km) above the earth, and of unknown composition.
Also called mother-of-pearl cloud. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
Cite This Source
nacreous cloud in Science
nacreous cloud
A cloud resembling a cirrus, showing iridescent coloration when the Sun is several degrees below the horizon. These clouds appear mostly during winter in regions of high latitude.
The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
Cite This Source

Word of the Day

Nearby words for nacreous cloud

Word Value for nacreous

Scrabble Words With Friends