actinism Hear it!

actinism definition

ac·tin·ism (ak′tin iz′əm)

noun

that property of ultraviolet light, X-rays, or other radiations, by which chemical changes are produced

Etymology: actin- + -ism

Webster's New World College Dictionary Copyright © 2009 by Wiley Publishing, Inc., Cleveland, Ohio.
Used by arrangement with John Wiley & Sons, Inc.

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