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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.

See Examples For:

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

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

At what temperature is this rms speed achieved?

From Textbooks Aug. 12, 2015

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

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

Yang, alongside co-writer Anna Drezen, imagined the iceberg as a pop diva whose sinking of the R.M.S.

From Salon Feb. 17, 2025

Now that the world knows what happened to the Titan, the submersible that vanished Sunday on a dive to view the wreck of the R.M.S.

From New York Times Jun. 23, 2023

It takes eight hours and $250,000 to get to what remains of the R.M.S.

From National Geographic Jun. 20, 2023

An ambitious digital imaging project has produced what researchers describe as a “digital twin” of the R.M.S.

From New York Times May 17, 2023

Here is the Programme of our Concert:— R.M.S.

From The British Association's Visit to Montreal, 1884 : letters by Rayleigh, Clara

Are Cartier Love bracelets about to replace the Hermès RMS -0.24%decrease; red down pointing triangle Birkin bag as the product that drives the best shareholder returns in the luxury-goods industry?

From The Wall Street Journal Jul. 22, 2026

Birkin bag maker Hermes RMS 1.19%increase; green up pointing triangle reported a slowdown in sales growth for the first quarter as the war in Iran clouds the sector’s rebound.

From The Wall Street Journal Apr. 15, 2026

John Richardson had been instrumental in the RMS Carpathia rescuing survivors from the Titanic's lifeboats, just hours after it had gone down in the North Atlantic, killing 1,500 people.

From BBC Apr. 14, 2026

That didn’t rescue the Pike, nor did another new name for the area: Queen Park, after the ocean liner RMS Queen Mary, permanently anchored on the Long Beach landscape.

From Los Angeles Times Jul. 4, 2025

That’s what happened in March 1942, when Elizebeth discovered that the Nazis were planning to ambush the RMS Queen Mary, which had over eight thousand American servicemen on board.

From "The Woman All Spies Fear" by Amy Butler Greenfield

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