a quantity of which a given quantity is the square:
The quantities +6 and −6 are square roots of 36 since (+6)×(+6)=36 and (−6)×(−6)=36.
a number or quantity that when multiplied by itself gives a given number or quantity: 2 is a square root of 4, usually written √4 or 41/2
A number that, when squared, yields a given number. For example, since 5 × 5 = 25, the square root of 25 (written √25) is 5.
square root definition
A number that, when multiplied by itself, will result in a given number. The square root of four is two; the square root of one hundred is ten.
Note: The square roots of many numbers, such as three, are irrational numbers.
noun, Nautical. 1. a sail set beneath a horizontal yard, the normal position of which, when not trimmed to the wind, is directly athwartships. noun 1. (nautical) a rectangular or square sail set on a horizontal yard rigged more or less athwartships
noun, Typography. 1. a font of type having serifs with a weight equal to or greater than that of the main strokes. Compare Egyptian (def 5).
noun, Mining. 1. a set having 12 timbers joined to form eight 90° solid angles.
noun 1. square deal.