pertaining to a body that, with respect to one or more characteristics, possesses the same properties in all directions —note wood (in contrast to, e.g., steel) is markedly anisotropic, particularly in its strength and elastic properties, which differ in three directions according to three mutually perpendicular axes of symmetry (longitudinal, radial, and tangential) that correspond to the main features of wood structure and the marked anisotropy of the cellulose long-chain moleculesThis definition last updated 10/28/2008