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tropaeolin. In DICTIOUS you will not only get to know all the dictionary meanings for the word
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English
Etymology
From Tropaeolum + -in.
Noun
tropaeolin (countable and uncountable, plural tropaeolins)
- Any of several orange dyes of very complex composition: tropaeolin O (acid orange 6, chrysoine resorcinol), tropaeolin OO (acid orange 5), or tropaeolin OOO (acid orange 7).