ppm
Also PPM, P.P.M., p.p.m. parts per million.
pulse per minute.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024
British Dictionary definitions for ppm
ppm
abbreviation for
chem parts per million
Also: PPM peak programme meter
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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