) root of a number
71Dudeney number — A Dudeney number is a positive integer that is a perfect cube such that the sum of its decimal digits is equal to the cube root of the number. There are exactly six such integers (sequence A061209 in OEIS): 1 = 1 x 1 x 1 ; 1 = 1 512 = 8 x 8 x 8 ; …
72cube root — cube roots N COUNT: usu sing, the N of n The cube root of a number is another number that makes the first number when it is multiplied by itself twice. For example, the cube root of 8 is 2 …
73square root — square roots N COUNT: usu N of num The square root of a number is another number which produces the first number when it is multiplied by itself. For example, the square root of 16 is 4 …
74square root — noun (C) the square root of a number is the number which, when multiplied by itself, equals that number: The square root of nine is three …
75Square number — Square Square (skw[^a]r), a. 1. (Geom.) Having four equal sides and four right angles; as, a square figure. [1913 Webster] 2. Forming a right angle; as, a square corner. [1913 Webster] 3. Having a shape broad for the height, with rectilineal and… …
76Cube root — Cube Cube (k[=u]b), n. [F. cube, L. cubus, fr. Gr. ???? a cube, a cubical die.] 1. (Geom.) A regular solid body, with six equal square sides. [1913 Webster] 2. (Math.) The product obtained by taking a number or quantity three times as a factor;… …
77cube root — n. the number or quantity of which a given number or quantity is the cube [the cube root of 8 is 2] …
78square root — n. the number or quantity which when squared will produce a given number or quantity [3 is the square root of 9] …
79cube root — ► NOUN ▪ the number which produces a given number when cubed …
80To extract the root — Extract Ex*tract , v. t. [imp. & p. p. {Extracted}; p. pr. & vb. n. {Extracting}.] [L. extractus, p. p. of extrahere to extract; ex out + trahere to draw. See {Trace}, and cf. {Estreat}.] 1. To draw out or forth; to pull out; to remove forcibly… …
