Quantcast
Merriam-Webster Logo
  • Dictionary
  • Thesaurus
  • Medical
  • Scrabble
  • Spanish Central
  • Learner's Dictionary

square root

noun

Simple Definition of square root

  • mathematics : a number that produces a specified number when it is multiplied by itself

Source: Merriam-Webster's Learner's Dictionary

Full Definition of square root

  1. :  a factor of a number that when squared gives the number <the square root of 9 is ±3>

Examples of square root in a sentence

  1. The square root of 9 is 3.



1557

First Known Use of square root

1557


SQUARE ROOT Defined for Kids

square root

noun

Definition of square root for Students

  1. :  a number that when multiplied by itself equals a specified number <The square root of 9 is 3.>





Seen and Heard

What made you want to look up square root? Please tell us where you read or heard it (including the quote, if possible).

WORD OF THE DAY

the Celtic May Day festival

Get Word of the Day daily email!

WORD GAMES

Take a 3-minute break and test your skills!

image567572573

Which of these is a synonym of unctuous?

maudlin angry prompt oily
Name That Thing

Test your visual vocabulary with our 10-question challenge!

TAKE THE QUIZ
SCRABBLE® Sprint

Test Your Knowledge - and learn some interesting things along the way.

TAKE THE QUIZ