# square-root

## square root

noun
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.

Origin:
1550–60

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World English Dictionary
 square root —n 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

Collins English Dictionary - Complete & Unabridged 10th Edition
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Science Dictionary
 square root   A number that, when squared, yields a given number. For example, since 5 × 5 = 25, the square root of 25 (written √25) is 5.
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American Heritage
Cultural Dictionary

### 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.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition