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.

Origin of methylene blue

First recorded in 1885–90

Example sentences from the Web for methylene blue

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 O Also called: methylthionine chloride

Medical 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.

Scientific 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.