- (organic chemistry) A glucoside obtained from woad and other plants, the source of natural indigo.
- (organic chemistry) An indigo-forming substance found in urine and other animal fluids, and convertible into red and blue indigo (urrhodin and uroglaucin); an indoxyl sulphate of potash.
- (indigo-forming substance found in urine): uroxanthin
Part or all of this entry has been imported from the 1913 edition of Webster’s Dictionary, which is now free of copyright and hence in the public domain. The imported definitions may be significantly out of date, and any more recent senses may be completely missing.