Open English Wordnet
Nouns
(n)erythrocyte sedimentation rate, ESR, sedimentation rate, sed ratethe 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
(n)electron spin resonance, ESR, electron paramagnetic resonancemicrowave spectroscopy in which there is resonant absorption of radiation by a paramagnet