Definition of parallelogram in English:



  • A four-sided plane rectilinear figure with opposite sides parallel.

    • ‘Four congruent sides lie on two parallel lines, and pairs of these sides define parallelograms of equal area.’
    • ‘In the deformation, the parallelograms always remain parallelograms, because their opposite sides remain equal, but the angles change.’
    • ‘His vertical stripes have been put onto a slant, and whittled down to slender triangles or widened into parallelograms or pyramids.’
    • ‘Because the direction of the slope did not coincide with the axis of the view, the architect made the plan in the shape of a parallelogram.’
    • ‘The building is in the form of a rectangular parallelogram, 294 feet five inches long by 219 feet nine inches wide, covering an area of 7,188 square yards.’


Late 16th century: from French parallélogramme, via late Latin from Greek parallēlogrammon, from parallēlos alongside another + grammē line.