noun, often capitalized tro·pae·o·lin \trōˈpēələ̇n\
variants: or



Definition of tropaeolin



  1. :  any of several orange or orange-yellow azo dyes some of which (as methyl orange) are used as acid-base indicators or as biological stains

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Origin and Etymology of tropaeolin

International Scientific Vocabulary tropaeol- (from New Latin Tropaeolum) + -in

First Known Use: 1878

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