aeolotropy

from The Century Dictionary.

• noun In physical, the state or quality of being æolotropic; the opposite of isotropy (which see); anisotropy.

from the GNU version of the Collaborative International Dictionary of English.

• noun (Physics) Difference of quality or property in different directions.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun physics The phenomenon whereby the physical properties (e.g., electric conductivity, refractive index) of a body depend on the direction in which they are measured.