aurin

• aurine (dated)

From Latin aurum (“gold”) +‎ -in.

aurin (uncountable)

1. (organic chemistry) A red colouring matter derived from phenol. Used as an indicator.

• (in commerce): yellow corallin
• (chemistry): rosolic acid

• “aurin”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.

• NAIRU