methylene blue
noun Chemistry, Pharmacology.
a dark-green, crystalline compound, C16H18ClN3S, that dissolves in water to form a deep-blue solution: used chiefly as a dye, as a bacteriological and biological stain, and as an antidote for cyanide poisoning.
Words nearby methylene blue
Origin of methylene blue
First recorded in 1885–90
Also called methylthionine chloride.
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for methylene blue
Ingestion of small amounts of methylene-blue gives a pale green; large amounts give a marked blue.
A Manual of Clinical Diagnosis|James Campbell ToddThe most promising of the methods which have been devised are cryoscopy, the methylene-blue test, and the phloridzin test.
A Manual of Clinical Diagnosis|James Campbell ToddEffect of freezing procedures on methylene-blue reduction time.
Preservation of Bull Semen at Sub-Zero Temperatures|N. L. VanDemarkThey can readily be demonstrated in smears stained with Lffler's methylene-blue.
A Manual of Clinical Diagnosis|James Campbell Todd
British Dictionary definitions for methylene blue
methylene blue
noun
a dark-green crystalline compound forming a blue aqueous solution, used as a mild antiseptic and biological stain. Formula: C 16 H 18 N 3 SCl.3H 2 OAlso called: methylthionine chloride
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Medicine definitions for methylene blue
methylene blue
n.
A basic aniline dye that forms a deep blue solution when dissolved in water and is used as a bacteriological stain and as an antidote for cyanide poisoning.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
Science definitions for methylene blue
methylene blue
A basic dye that forms a deep blue solution when dissolved in water. It is used as an antidote for cyanide poisoning and as a bacteriological stain. Chemical formula: C16H18N3SCl.
The American Heritage® Science Dictionary
Copyright © 2011. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.