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rms

1 American  
Or r.m.s.

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

R.M.S. 2 American  

abbreviation

  1. Railway Mail Service.

  2. British. Royal Mail Service.

  3. British. Royal Mail Steamship.

RMS 1 British  

abbreviation

  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
rms 2 British  

abbreviation

  1. root mean square

"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

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

To summarize, when dealing with AC, Ohm's law and the equations for power are completely analogous to those for DC, but rms and average values are used for AC.

From Textbooks • Aug. 12, 2015

You can think of these rms and average values as the equivalent DC values for a simple resistive circuit.

From Textbooks • Aug. 12, 2015

Since an AC voltage is applied, there is an rms current, but it is limited by the capacitor.

From Textbooks • Aug. 12, 2015

At what temperature is this rms speed achieved?

From Textbooks • Aug. 12, 2015

Certain heavy industrial equipment uses AC power that has a peak voltage of 679 V. What is the rms voltage?

From Textbooks • Aug. 12, 2015

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.