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English definition of “square”

square

noun [C]     /skweər/
SHAPE A2 a shape with four equal sides and four 90° anglesGeometrical shapesSpherical, circular and annular objects
PLACE A2 an open area with buildings around it, often in the centre of a town: Trafalgar SquareUrban and residential streetsGardens and yards
NUMBER a number that results from multiplying a number by itself: The square of 3 is 9.Addition, subtraction, multiplication and divisionCalculations and calculatingNumbers generally
→ See also fair and square, back to square one
(Definition of square noun from the Cambridge Learner's Dictionary © Cambridge University Press)

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