purpurin

 : 
Noun
 : 
pur=pu=rin

CIDE DICTIONARY

purpurinn. 
     A dyestuff resembling alizarin, found in madder root, and extracted as an orange or red crystalline substance.  [1913 Webster]

OXFORD DICTIONARY

purpurin, n. a red colouring-matter occurring naturally in madder roots, or manufactured synthetically.


For further exploring for "purpurin" in Webster Dictionary Online


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