Parallel motion Meaning, Definition & Usage

Definitions
  1. . (a) (Mach.) A jointed system of links, rods, or bars, by which the motion of a reciprocating piece, as a piston rod, may be guided, either approximately or exactly in a straight line . Rankine. (b) (Mus.) The ascending or descending of two or more parts at fixed intervals, as thirds or sixths.

Webster 1913