tropaeolin
noun,
often capitalized
tro·pae·o·lin
\trōˈpēələ̇n\
variants: or
tropeolin
\trōˈpēələ̇n\Definition of tropaeolin
-s
: 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
From the M-W Editors
There's more!
Love words? You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.
Start your free trial today and get unlimited access to America's largest dictionary, with:
- More than 250,000 words that aren't in our free dictionary
- Expanded definitions, etymologies, and usage notes
- Advanced search features
- Ad free!
Origin and Etymology of tropaeolin
International Scientific Vocabulary tropaeol- (from New Latin Tropaeolum) + -in
First Known Use: 1878
Seen and Heard
What made you want to look up tropaeolin? Please tell us where you read or heard it (including the quote, if possible).
Writing? Check your grammar now!