Reciprocation may refer to:
- Reciprocating motionReciprocating motionReciprocating motion, also called reciprocation, is a repetitive up-and-down or back-and-forth motion. It is found in a wide range of mechanisms, including reciprocating engines and pumps. The two opposite motions that comprise a single reciprocation cycle are called strokes...
, a type of oscillatory motion, as in the action of a reciprocating saw
- Reciprocation in geometry, an operation with circles that involves transforming each point in plane into its polarPole and polarIn geometry, the terms pole and polar are used to describe a point and a line that have a unique reciprocal relationship with respect to a given conic section...
line and each line in the plane into its pole