ˌpærəˈleləuɡræm n. Geom. a four-sided plane
rectilinear figure with opposite sides
parallel. øparallelogram of forces 1 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
meeting at that point,
their resultant is represented by the
diagonal drawn from that point. 2
this theorem. [F parall÷logramme f. LL parallelogrammum f. Gk parallelogrammon (as PARALLEL,
gramme line)]