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ros·an·i·linealso ros·an·i·lin (rō-zăn′ə-lĭn)
1. A colorless crystalline organic base, C20H21N3O, or one of this base's yellow-brown or green crystalline hydrochloride salts which form a red solution in water, derived from aniline and used in the manufacture of fuchsin and other dyes, and in Schiff's reagent.
2. Any of various compounds, especially dyes, related to or derived from rosaniline.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
rosaniline(rəʊˈzænɪˌliːn; -lɪn) or
(Dyeing) a reddish-brown crystalline insoluble derivative of aniline used, in the form of its soluble hydrochloride, as a red dye. See also fuchsin
[C19: from rose1 + aniline]
Collins English Dictionary – Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014
ros•an•i•line(roʊˈzæn l ɪn, -ˌaɪn)
1. a red dye, C20H20N3Cl, derived from aniline and the ortho isomer of toluidine.
2. the base, C20H21N3O, which, with hydrochloric acid, forms this dye.
Random House Kernerman Webster's College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.