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English definition of “rpm”

rpm

noun (plural rpm or or rpms) UK (US r.p.m.)    
TRANSPORT abbreviation for revolutions per minute: used when stating the number of times part of a machine, engine, etc. goes around during a minute: at 600/7200/19,000, etc. rpm(s) We're trying to make engines that spin at more than 19,000 rpm. low/high rpm(s) The engine rpm remained relatively constant.
COMMERCE, FINANCE abbreviation for resale price maintenance
(Definition of rpm noun from the Cambridge Business English Dictionary © Cambridge University Press)
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