Pronunciation: (SEH-dih-men-TAY-shun rayt)
The distance red blood cells travel in one hour in a sample of blood as they settle to the bottom of a test tube. The sedimentation rate is increased in inflammation, infection, cancer, rheumatic diseases, and diseases of the blood and bone marrow. Also called erythrocyte sedimentation rate and ESR.
Source: NCI Dictionary of Cancer Terms2004-01-23 Date last modified: 2007-03-20