hematuria /hē′məto͝or″ē·ə, hem′-/ [Gk, haima + ouron, urine] , adj., abnormal presence of blood in the urine. It is symptomatic of many renal diseases and disorders of the genitourinary system and is detected by microscopic examination of urine sediment and chemical analysis using a reagent chemical. Also spelled haematuria. −hematuric, adj.