bil·i·ru·bin
| \ ˌbi-li-ˈrü-bən
, ˈbi-li-ˌrü-\
: a reddish-yellow water-insoluble pigment C33H36N4O6 that is formed by the breakdown of heme, is excreted in a water-soluble form by liver cells into bile, and occurs in blood and urine especially in diseased states — see jaundice