Anisotropy
Astrophysics
The difference in the property of a system with changes in direction. In this case, anisotropy refers to the difference in the temperature of the cosmic microwave background radiation with direction.
- — Microwave Anisotropy Probe Glossary of Technical Terms retrieved 2014-05-20
Something that is anisotropic has a physical property value that varies when measured from a different direction. In cosmology, anisotropies refer to the difference in temperature of the CMB with direction.
- — The Universe Adventure Glossary retrieved 2014-05-20
Water
Flow conditions vary with direction. Most aquifers are anisotropic.