Alignment

[1] When referring to wheel alignment, it is the proper adjustment of a vehicle's front or rear suspension for camber, toe-in, toe-out, kingpin inclination or steering axis inclination, and turning radius or toe-out on turns, caster, and ride height. Four-wheel alignment is necessary for front-wheel drive vehicles.
[2] The adjustment of two objects to bring them into the proper relation to each other.
[3] The setting in line (usually straight) of successive lengths of a railway which is to be constructed
[4] The plan of a road or earthwork
[5] The setting in a true line of a number of points, e.g., the centers of the bearings supporting an engine crankshaft
[6] Process of orientation of e.g., electric or magnetic dipoles when acted on by an external field. During magnetization, the alignment of domains is changed by the magnetizing field
[7] Adjustment of preset tuned circuits to give optimum performance
See also door alignment, four-wheel alignment, four wheel alignment, front-end alignment, front end alignment, wheel alignment