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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
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Difficulty index for
root mean square
Few English speakers likely know this word
Word Value for
root
4
4
Scrabble
Words With Friends
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