• synonyms


[ roh-zan-l-in, -ahyn ]
/ roʊˈzæn l ɪn, -ˌaɪn /

noun Chemistry.

a red dye, C20H20N3Cl, derived from aniline and orthotoluidine, a constituent of fuchsin.
the base, C20H21N3O, which, with hydrochloric acid, forms this dye.

Nearby words

rosaceous, rosalie, rosalind, rosamond, rosamund, rosaniline, rosanna, rosanne, rosarian, rosario, rosario strait

Origin of rosaniline

First recorded in 1860–65; rose1 + aniline Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for rosaniline

British Dictionary definitions for rosaniline



/ (rəʊˈzænɪˌliːn, -lɪn) /


a reddish-brown crystalline insoluble derivative of aniline used, in the form of its soluble hydrochloride, as a red dyeSee also fuchsin

Word Origin for rosaniline

C19: from rose 1 + aniline
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

Medicine definitions for rosaniline



A brownish-red crystalline organic compound derived from aniline and used in the manufacture of dyes and in Schiff's reagent.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.