noun Date: circa 1890 a basic thiazine dye C 16 H 18 ClN 3 S3H 2 O used especially as a biological stain, an antidote in cyanide poisoning, and an oxidation-reduction indicator
METHYLENE BLUE
Meaning of METHYLENE BLUE in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012