: exhibiting properties with different values when measured in different directions an anisotropic crystal.

What is the meaning of anisotropy?

anisotropy, in physics, the quality of exhibiting properties with different values when measured along axes in different directions. Anisotropy is most easily observed in single crystals of solid elements or compounds, in which atoms, ions, or molecules are arranged in regular lattices.

What's the meaning of orthotropic?

1 : having the longer axis more or less vertical — compare plagiotropic. 2 : being, having, or relating to properties (such as strength, stiffness, and elasticity) that are symmetric about two or three mutually perpendicular planes a piece of straight-grained wood is an orthotropic material.