auramine

noun
au·​ra·​mine | \ˈȯrəˌmēn, -mə̇n\
variants: or less commonly auramin \ˈ⸗⸗mə̇n \
plural -s

Definition of auramine 

: a bright yellow ketonimine dye C17H22CIN3 of poor lightfastness and stability derived from diphenylmethane and used chiefly in coloring paper, in making pigments, in signal smokes, and as a fluorescent biological stain

called in full auramine O

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History and Etymology for auramine

International Scientific Vocabulary aur- (from Latin aurum gold) + amine; originally formed as German auramin

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