rms

or r.m.s.

(often initial capital letter) root mean square.

rm.

plural rms.

ream.
room.

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. 2018

Examples from the Web for rms

Historical Examples of rms

Irish rms or rmis, which is merely adapted from the word romance.
English As We Speak It in Ireland
P. W. Joyce
Postero die Rms Relator ex ambone Patres monuit, deputationem emendationem istam admittere nolle.
The History of Freedom
John Emerich Edward Dalberg-Acton

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