TROPAEOLIN

Etymology

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).

Source: Wiktionary


Tro*pæ"o*lin, n. (Chem.)

Definition: A name given to any one of a series of orange-red dyestuffs produced artificially from certain complex sulphonic acid derivatives of azo and diazo hydrocarbons of the aromatic series; -- so called because of the general resemblance to the shades of nasturtium (Tropæolum).

Source: Webster’s Unabridged Dictionary 1913 Edition



RESET




Word of the Day

24 June 2025

CLINGFISH

(noun) very small (to 3 inches) flattened marine fish with a sucking disc on the abdomen for clinging to rocks etc.


coffee icon

Coffee Trivia

The expression “coffee break” was first attested in 1952 in glossy magazine advertisements by the Pan-American Coffee Bureau.

coffee icon