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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.

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

The most likely speed vp is less than the rms speed vrms .

From Textbooks • Aug. 12, 2015

What will be the ratio of kinetic energies and rms speeds of a nitrogen molecule and a helium atom at the same temperature?

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

Although a capacitor is basically an open circuit, there is an rms current in a circuit with an AC voltage applied to a capacitor.

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.