/ Thesaurus / S Synonyms of sed rate Find synonyms for: Noun1. erythrocyte sedimentation rate, ESR, sedimentation rate, sed rate, rateusage: 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 inflammationWordNet 3.0 Copyright © 2006 by Princeton University. All rights reserved. Related Content Daily Word Quiz: acerbity Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language