A device used in security systems that can alert the user of the presence of a moving object.

(astronomy, celestial mechanics) An angle of 𝜏 (radians) divided by the orbital period (of a celestial body in an elliptic orbit).

Motion given by inherent powers, without external impulse.

The distance (linear or angular) that a movable object may normally travel while properly attached to another. / (bodybuilding) The distance the relevant body parts travel during an exercise.

The rhythmic fluctuation of the flow of blood in the capillaries. / (film) A combination of a timelapse, hyperlapse, and regular cinematographic shots.

(engineering) The difference between the motion of a driver and that of a follower, due to the yielding of parts or looseness of joints.

Alternative form of it ain't the meat, it's the motion (size doesn't matter as much as technique)

plural of range of motion

plural of motion detector

The apparent streaking of rapidly moving objects in a still image or a sequence of images such as a movie or animation. It results when the image being recorded changes during the recording of a single frame, either due to rapid movement or long exposure.