or r.m.s.

  1. (often initial capital letter) root mean square.

Words Nearby rms

Other definitions for R.M.S. (2 of 2)


  1. Railway Mail Service.

  2. British. Royal Mail Service.

  1. British. Royal Mail Steamship.

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

How to use rms in a sentence

  • Runnin' off to Cuba with wan hundherd men an' ar-rms, iv coorse.

    Mr. Dooley in Peace and in War | Finley Peter Dunne
  • He was received with open ar-rms be ivry wan in that gr-reat city that knew the combynation iv a safe.

    Mr. Dooley Says | Finley Dunne
  • Postero die rms Relator ex ambone Patres monuit, deputationem emendationem istam admittere nolle.

    The History of Freedom | John Emerich Edward Dalberg-Acton
  • Irish rms or rmis, which is merely adapted from the word romance.

  • An' he come fr'm th' fun'ral with th' first smile on his face that anny man iver see there, an' th' baby in his ar-rms.

    Mr. Dooley in Peace and in War | Finley Peter Dunne

British Dictionary definitions for rms (1 of 2)


abbreviation for
  1. root mean square

British Dictionary definitions for RMS (2 of 2)


abbreviation for
  1. Royal Mail Service

  2. 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