methylene blue Hear it!

methylene blue definition

methylene blue

a bluish-green aniline dye, CHNClS·3HO, used as a bacteriologic stain, an antidote in cyanide poisoning, etc.

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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