safranine /ˈsafrəˌnēn, -nin , ˈsæfrəˌnin 
/ (also safranin /-nin/) ▸ noun Chemistry any of a large group of synthetic azo dyes, mainly red, used as biological stains.
– ORIGIN mid 19th century (denoting the yellow coloring matter in saffron): from French.
EnglishOxford New American Dictionary
