ESR n 1: the rate at which red blood cells settle out in a tube of blood under standardized conditions; a high rate usually indicates the presence of inflammation [syn: {erythrocyte sedimentation rate}, {sedimentation rate}, {sed rate}] 2: microwave spectroscopy in which there is resonant absorption of radiation by a paramagnet [syn: {electron spin resonance}, {electron paramagnetic resonance}]
ESR {Eric S. Raymond}