rose bengal
/ˌrəʊz bɛnˈɡɔːl/ /ˌrəʊz bɛŋˈɡɔːl/(also rose bengale) Chemistry
noun
A bluish-red dye related to fluorescein, used especially as a biological stain.
- Rose bengal is 4,5,6,7-tetrachloro-2′,4′,5′,7′-tetraiodofluorescein (or the sodium or potassium salt of this), C20H4O5Cl4I4..
Origin
Late 19th century; earliest use found in Chemical News. From French rose bengale from rose + the name of Bengale; in some forms showing assimilation of the second element to the English form of the place name.
- foolhardily
- foolhardiness
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- fools rush in where angels fear to tread
- foosball
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