:''For other uses, see
orientation.''
'Orientation' means direction of some axis or vector or pseudo-vector.
It can be orientation of an arrow of a compass, or orientaiton of the director in the
nematic liquid crystal,
as orientation of an electric or magnetic
dipole, etc.
For
rigid objects, the orientation cannot be described with a single direction; the directions of at least two orthogonal axes, fixed to the body, are needed; these directions can be represented, for instance, by an orientation
matrix or by
Euler angles (see
orientation (geometry)).
The direction of a
real vector field also can be considered as orientation. See
Orientation (mathematics).