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tropaeolin

American  
[troh-pee-uh-lin] / troʊˈpi ə lɪn /
Or tropeolin

noun

Chemistry.

  1. any of a number of orange or yellow azo dyes of complex molecular structure.

tropaeolin British  
/ trəʊˈpiːəlɪn /

noun

  1. any of certain yellow and orange azo dyes of complex structure

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of tropaeolin

1875–80; < New Latin Tropaeol ( um ) nasturtium, genus of plants yielding the dyes (equivalent to Latin tropae ( um ) trophy + -olum, neuter of -olus -ole 1 ) + -in 2

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.