a square root
51Root mean square deviation — The root mean square deviation (RMSD) ( also root mean square error (RMSE) ) is a frequently used measure of the differences between values predicted by a model or an estimator and the values actually observed from the thing being modeled or… …
52root — 1. n. & v. n. 1 a the part of a plant normally below the ground, attaching it to the earth and conveying nourishment to it from the soil. b (in pl.) such a part divided into branches or fibres. c the corresponding organ of an epiphyte; the part… …
53Root system — This article discusses root systems in mathematics. For root systems of plants, see root. Lie groups …
54root mean square — Math. the square root of the arithmetic mean of the squares of the numbers in a given set of numbers. Abbr.: rms [1890 95] * * * root mean square noun The square root of the sum of the squares of a set of quantities divided by the total number of …
55root — I n. 1) to take root 2) to put down roots; to strike root(s) 3) deep roots 4) (mathematics) a cube; square root 5) by the roots (to pull smt. up by the roots) 6) (misc.) at the root of the matter; to go back to, search for one s roots; to get at… …
56Square number — In mathematics, a square number, sometimes also called a perfect square, is an integer that can be written as the square of some other integer; in other words, it is the product of some integer with itself. So, for example, 9 is a square number,… …
57square — n., adj., adv., & v. n. 1 an equilateral rectangle. 2 a an object of this shape or approximately this shape. b a small square area on a game board. c a square scarf. d an academic cap with a stiff square top; a mortarboard. 3 a an open (usu. four …
58Root (mathematics) — This article is about the zeros of a function, which should not be confused with the value at zero. You may also want information on the Nth roots of numbers instead. In mathematics, a root (or a zero) of a complex valued function f is a member x …
59Square (algebra) — In algebra, the square of a number is that number multiplied by itself. To square a quantity is to multiply it by itself.Its notation is a superscripted 2 ; a number x squared is written as x ². Thus: If x is a positive real number, the value of… …
60square — A closed two dimensional shape (polygon) bounded by four straight line segments of equal length (equilateral) joined at four equal (right) angles. The formula with which to find its area: the length of one side squared (see below). The… …
