Main Entry: rose ben·gal Pronunciation: -ben-'gol, -be[ng]- Function: noun : either of two bluish red acid dyes that are iodinated and chlorinatedderivatives of fluorescein
rose bengal rose ben·gal (rōz' běn-gôl', běng-, běn'gəl, běng'-) n. A bluish-red dye used as a stain for bacteria, as a stain in the diagnosis of keratitis sicca, and in tests of liver function.