˜yÐÄvlog

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orcein

[ awr-see-in ]

noun

Chemistry.
  1. a red dye, the principal coloring matter of cudbear and orchil, obtained by oxidizing an ammoniacal solution of orcinol.

orcein

/ ˈɔ˲õɪɪ²Ô /

noun

  1. a brown crystalline material formed by the action of ammonia on orcinol and present in orchil: used as a dye, biological stain, and antiseptic. Formula: C 28 H 24 O 7 N 2
“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
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˜yÐÄvlog History and Origins

Origin of orcein1

1830–40; arbitrary alteration of orcin; orcinol
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˜yÐÄvlog History and Origins

Origin of orcein1

C19: see orcinol

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