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English definition of “square”

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square

noun [C, usually singular]
 
 
/skweər/
the result of multiplying a number by itself: The square of 7 is 49.
be back to square one informal to not have made any progress after trying to succeed or achieve something: While congestion charging had an initial impact, many cities are almost back to square one in terms of traffic volumes.
→  See also market square
(Definition of square noun from the Cambridge Business English Dictionary © Cambridge University Press)
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