Definition of square root noun from the Oxford Advanced Learner's Dictionary

 

square root

 noun
noun
BrE
 
; NAmE
 
(mathematics) Mathematical terminology
 
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a number which when multiplied by itself produces a particular number The square root of 64 (√64) is 8 (8 × 8 = 64). compare cube root See related entries: Mathematical terminology
See the Oxford Advanced American Dictionary entry: square root