› a shape with four 90° angles and four sides, with opposite sides of equal length and two sides longer than the other twoGeometrical shapesSpherical, circular and annular objects

rectangular /rekˈtæŋɡjələr/ adjective
B2 shaped like a rectangle: a rectangular roomGeometrical shapesSpherical, circular and annular objects(Definition of rectangle from the Cambridge Learners Dictionary
© Cambridge University Press)

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October 22, 2014

We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,