an·i·so·trop·ic 
(ăn-ī′sə-trŏpĭk, -trōpĭk)
(ăn-ī′sə-trŏpĭk, -trōpĭk)adj.
1. Not isotropic.
2. Physics Having properties that differ based on the direction of measurement.
an·i′so·tropi·cal·ly adv.
an′i·sotro·pism (-sŏtrə-pĭz′əm), an′i·sotro·py (-sŏtrə-pē) n.