alizarin

[uh-liz-er-in]
noun Chemistry.
  1. a solid appearing reddish-orange as crystals and brownish-yellow as powder, C14H8O4, one of the earliest known dyes, formerly obtained in its natural state from madder and now derived from anthraquinone: used chiefly in the synthesis of other dyes.
Also a·liz·a·rine [uh-liz-er-in, -uh-reen] /əˈlɪz ər ɪn, -əˌrin/.

Origin of alizarin

1825–35; < French alizarine, equivalent to alizar(i) (< Spanish < Arabic al the + ʿaṣārah juice) + -ine -ine1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

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British Dictionary definitions for alizarin

alizarin

noun
  1. a brownish-yellow powder or orange-red crystalline solid used as a dye and in the manufacture of other dyes. Formula: C 6 H 4 (CO) 2 C 6 H 2 (OH) 2

Word Origin for alizarin

C19: probably from French alizarine, probably from Arabic al-’asārah the juice, from ’asara to squeeze
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

alizarin in Medicine

alizarin

[ə-lĭzər-ĭn]
n.
  1. An orange-red crystalline compound used in making dyes and as an indicator.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.