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A dark brown-red pigment that may be formed when bilirubin is reduced.
Etymology: Gk, hydor, water; L, bilis, bile, ruber, red
a reddish-brown bile pigment produced by the reduction of bilirubin.
hydrobilirubin(hī″drō-bĭl″ĭ-roo′bĭn) [″ + L. bilis, bile, + ruber, red]
A brownish-red bile pigment, derived from bilirubin and thought to be identical to stercobilin and urobilin.