violet layer Hear it!

violet layer definition

violet layer

Astron. a layer of particles in the upper atmosphere of the planet Mars, that scatters and absorbs certain electromagnetic radiation, thus preventing the blue, violet, and ultraviolet light waves from passing through

Webster's New World College Dictionary Copyright © 2005 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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