Thesaurus
Translate
Puzzles & Games
Word of the Day
Blog
Slideshows
Apps by Dictionary
My Account
Log Out
Log In
follow Dictionary.com
Dictionary
Thesaurus
Translate
More...
Our Blog
Daily Crossword
Crossword Solver
Is irregardless a word?
Favorite Button
CITE
Translate
Facebook
Share
Twitter
Tweet
Google+
Share
root mean square
Word Origin
noun
,
Mathematics
1.
the square root of the arithmetic mean of the squares of the numbers in a given set of numbers.
Abbreviation:
rms.
Origin of
root mean square
Expand
1890-1895
1890-95
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
Cite This Source
British Dictionary definitions for
root mean square
Expand
root mean square
noun
1.
the square root of the average of the squares of a set of numbers or quantities:
the root mean square of 1, 2, and 4 is √[(1² + 2² + 4²)/3] = √7,
rms
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
Cite This Source
Discover our greatest slideshows
Penny-farthings to Panniers: 7...
Speak with Savoir-faire: 10 French...
A Wordy Look at Inside Out's 5...
Seven Wacky Words Born in the USA
Browse more topics on our blog
What Is the Difference Between Discreet and Discrete?
Learn the correct uses of these two commonly confused homophones.
What Character Was Removed from the Alphabet?
What mistaken pronunciation gave this character its name?
Apostrophes 101
This small mark has two primary uses: to signify possession or omitted letters.
How Do I Get a Word into the Dictionary?
People invent new words all the time, but which ones actually make it?
Word of the Day
Difficulty index for
root mean square
Few English speakers likely know this word
Word Value for
root
4
4
Scrabble
Words With Friends
Nearby words for root mean square
root branch
root bridge
root canal
root canal therapy
root cap
root caries index
root cellar
root climber
root crop
root directories
root directories'
root directory
root directory's
root division
root doctor
root field
root field's
root fields
root fields'
root filament
root for
root ginger
root graft
root hair
root knot
root mean square
root mode
root node
root nodule
root normal form
root of lung
root of nail
root of penis
root of the matter
root of tongue
root of tooth
root of unity
root out
root position
root pressure
root resection
root rot
root sheath
root system
root test
root treatment
root up
root version
root's
root-and-branch
root-branch