[isos.ta.sy] n [ISV is- + Gk -stasia condition of standing, fr. histanai to cause to stand--more at stand] (1889) 1: general equilibrium in the earth's crust maintained by a yielding flow of rock material beneath the surface under gravitative stress
2: the quality or state of being subjected to equal pressure from every side -- iso.stat.ic adj -- iso.stat.i.cal.ly adv