Definition of square root
- the square root of 9 is ±3
The square root of 9 is 3.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'square root.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
mathematics : a number that produces a specified number when it is multiplied by itself
What made you want to look up square root? Please tell us where you read or heard it (including the quote, if possible).