tropæolin

A form of tropaeolin — 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).

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Meanings

nountropæolin (uncountable)
  1. obsoleteuncountableObsolete spelling of tropaeolin.

    The asserted fact that free hydrochloric acid is absent from the fluid removed by a siphon in cases of cancer of the stomach has been lately much discussed in Germany, and Dr Van der Welden, of Strassburg, introduced an alcoholic solution of tropæolin as a test with this object.

    1891, Charles Hilton Fagge, Philip Henry Pye-Smith, Text‐book of the Principles and Practice of Medicine, volume II, page 199
Cite this entry
APA

tropæolin. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/trop%C3%A6olin

MLA

“tropæolin.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trop%C3%A6olin. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “tropæolin,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/trop%C3%A6olin.

Source: tropæolin on Wiktionary, CC BY-SA 4.0.