(physics) Random motion of particles suspended in a fluid, arising from those particles being struck by individual molecules of the fluid. / (by extension) A state of chaos or disarray.

(mechanics) Motion with a continually increasing velocity.

(physics) The motion of some hypothetical device that continues forever with no external input of energy, in violation of the laws of thermodynamics.

The use of sensors to track and record the position, velocity, acceleration and impulse of a movement.

to motion-capture

A feeling of nausea or dizziness caused by a disagreement between visually perceived movement and the vestibular system's sense of movement; typically resulting from travel in a vehicle such as a ship or car.

(politics) A vote of no confidence.

(astronomy) The real or apparent motion of a star etc. through space.

(astronomy) The change in apparent position of a celestial body due to that body's velocity relative to the Sun.

slower than regular speed.