: a factor of a number that when squared gives the number
the square root of 9 is ±3
Example Sentences
The square root of 9 is 3.
Recent Examples on the WebAnd if the square of G’s coefficients is bounded by 10, then the coefficients themselves are bounded by the square root of 10, which is about 3.16.Quanta Magazine, 1 June 2022 If true, then the coefficients of G are actually bounded by the cube root of 10 (about 2.15), and not just its square root.Quanta Magazine, 1 June 2022 This allows guessing the value a by starting with the square root of N and then incrementing the guess by one each round. Dan Goodin, Ars Technica, 14 Mar. 2022 If the primes are close then a is close to the square root of N. Dan Goodin, Ars Technica, 14 Mar. 2022 Similarly, a root of x2 − 2, the square root of 2, is formed using the eighth roots of unity.Quanta Magazine, 25 May 2021 One of the most surprising and important mathematical findings is the irrationality of the square root of 2 (√2)—the length of the diagonal of a square with sides that are one unit long. Jean-paul Delahaye, Scientific American, 28 Apr. 2021 But since many attributes of high-dimensional shapes grow exponentially as the dimension grows, a square root’s worth of growth is modest by comparison.Quanta Magazine, 1 Mar. 2021 Imagine trying to puzzle out a square root by hand rather than using a calculator—the computing power majorly boosts your chances of success. Caroline Delbert, Popular Mechanics, 5 Apr. 2021 See More
Word History
First Known Use
1557, in the meaning defined above
Kids Definition
square root
noun
: a number that when multiplied by itself equals a specified number