root mean square
noun Mathematics.
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
First recorded in 1890–95
Words nearby root mean square
root for,
root ginger,
root graft,
root hair,
root knot,
root mean square,
root nodule,
root of lung,
root of nail,
root of penis,
root of the matter
British Dictionary definitions for root mean square
root mean square
noun
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 Abbreviation: rms