See Also: Parallelogram(medicine)
parallelogram(dictionary)
parallelogram(dictionary)

parallelogram (iou)



parallelogram noun. L16.
[French parallelogramme from late Latin parallelogrammum from Greek parallelogrammon, from parallelos PARALLEL adjective: see -GRAM.]
Geometry. A plane rectilinear figure with four sides, of which opposite ones are parallel. L16.
a. A pantograph. M17-E18.
b. An area or a division of a surface with the shape of a parallelogram. E19.
Phrases: parallelogram of forces (a parallelogram illustrating) the theorem that if two forces acting at a point are represented in magnitude and direction by two sides of a parallelogram, their resultant is represented by the diagonal drawn from that point.
parallelogra'mmatic adjective parallelogrammic E18.
,parallelo'grammic adjective pertaining to or of the form of a parallelogram M18.
,parallelo'grammical adjective (now rare or obsolete) parallelogrammic M17.