rms

or r.m.s.

|

(often initial capital letter) root mean square.

rm.

plural rms.

R.M.S.

Railway Mail Service.
British. Royal Mail Service.
British. Royal Mail Steamship.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for rms

rms

abbreviation for

root mean square

RMS

abbreviation for

Royal Mail Service
Royal Mail Steamer
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