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alizarin

a·liz·a·rin [ ə lízzərin ]


noun 
Definition:
 
orange-red or brownish yellow dye: an orange-red or brownish yellow crystalline compound. Source: coal tar, formerly madder root. Use: dyes. C14H8O4

[Mid-19th century. < French alizarine, probably < Arabic alizari "madder"]
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