al·bu·mi·nu·ri·a / alˌbyoōməˈn(y)oŏrēə/ • n. Med. the presence of albumin in the urine, typically as a symptom of kidney disease.

albuminuria (proteinuria) (al-bew-min-yoor-iă) n. the presence of serum albumin, serum globulin, or other serum proteins in the urine, which may be associated with kidney or heart disease. orthostatic a. albuminuria not associated with disease, occurring after strenuous exercise or after a long period of standing.