See Also: rectangle(medicine)
rectangle(1)(dictionary)
rectangle(2)(dictionary)
rectangle(dictionary)
golden ratio/rectangle/section(encyclopedia)

rectangle(2) (iou)



rectangle noun. L16.
[French, or medieval Latin rectangulum for earlier rectiangulum use as noun of neut. sing. of late Latin rectiangulus (after Greek orthogonios), from Latin rectus straight + angulus ANGLE noun3.]
A plane figure with four right angles and four straight sides, opposite sides being parallel and equal in length; esp. one in which adjacent sides are unequal; gen. a thing that has the shape of a rectangle. L16.
b. Math. The product of two quantities. L17-M18.
A right angle. M17-L18.