Having directionally dependent properties. For a crystal of a mineral, variation in physical properties observed in different directions is anisotropy. In rocks, variation in seismic velocity measured [..]

1854; see an- (1) "not" + isotropic.

Lacking consistent hardness on all surfaces. For example, the hardness of Kyanite on the Mohs scale is between 6 and 7 lengthwise, and between 4 and 4½ crosswise.

Pertaining to a material whose electrical or optical properties vary with (a) the direction of propagation of a traveling wave or with (b) different polarizations of a traveling wave. Note 1: Anisotropy is exhibited by non-cubic crystals, which have different refractive indices for lightwaves propagating in different directions or with different po [..]

An anisotropic material has different properties in different directions. For example, wood which has a grain is stronger in some one direction than another. Like wood, neodymium magnets are also anis [..]

Not possessing the same properties in all directions. Wood is anisotropic because the shrinking and swelling, from moisture loss or gain, are unequal in length, thickness, and width

Having properties that differ according to the direction of measurement.

(physics) Having properties that differ according to the direction of measurement; exhibiting anisotropy.

(adj) not invariant with respect to direction

Showing differences of property or of effect in different directions.

Lacking consistent hardness on all surfaces. For example, the hardness of Kyanite on the Mohs scale is between 6 and 7 lengthwise, and between 4 and 4½ crosswise.

Describes a structure whose appearance varies with the angle of observation. (12 Nov 1997)

The condition in which hydraulic properties of an aquifer are not equal when measured in all directions.

The property of a radiator that allows it to emit strong radiation in one direction. anisotropic: Pertaining to a material whose electrical or optical properties vary with the direction of propagation [..]

(physics,mathematics) Having properties that differ according to the direction of measurement; exhibiting anisotropy. ''The crystal has an anisotropic structure, as it is stronger along its length [..]