\I`so*ceph"a*lism\, n. [From Gr. ? like-headed. See
{Iso-}, and {Cephalon}.] (Art)
A peculiarity in the design of bas-relief by which the heads
of human figures are kept at the same height from the ground,
whether the personages are seated, standing, or mounted on
horseback; -- called also {isokephaleia}.