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area Two-dimensional measurement of a plane figure or body (such as this page) given in square units, such as cm2 or m2. The area of a rectangle of sides a and b is ab; the areas of triangles and other polygons can be determined using trigonometry. Areas of curved figures and surfaces can be determined by integral calculus.

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area clear open space; superficial extent XVI; enclosed court XVII. — L. ārea vacant piece of ground.