| Word | Definitions | Synonyms |
|---|---|---|
| urobilin | (noun) brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine | - |
| urobilinogen | (noun) a chromogen formed in the intestine from the breakdown of bilirubin; yields urobilins on oxidation; some is excreted in the feces and some is resorbed and excreted in bile or urine | Synonyms: stercobilinogen |