urobilinogen

[ yur′ō-bī-lĭnə-jən, -jĕn′ ]

n.

The precursor of urobilin and a product of the reduction of bilirubin.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.