methylene blue

English Thesaurus

1. a dark green dye used as a stain, an antiseptic, a chemical indicator, and an antidote in cyanide poisoning (noun.substance)

hypernym	:	thiazine,
definition	:	a compound made up of a ring of four carbon atoms and one sulfur atom and one nitrogen atom (noun.substance)

hypernym	:	stain,
definition	:	(microscopy) a dye or other coloring material that is used in microscopy to make structures visible (noun.substance)