(physics) Early classical mechanics as propounded by Isaac Newton, especially that based on his laws of motion and theory of gravity.

(physics) The branch of physics which studies matter and energy at the level of atoms and other elementary particles, and substitutes probabilistic mechanisms in place of classical Newtonian ones.

The ratio of the output force produced by a machine (especially a simple machine) to the applied input force.

Referring to a period before the mechanization of farming or some other human activity.

(chemistry) the ordered set of individual reactions whose overall effect is given by a chemical equation

(geology) a mechanical analogue of the seismic lithosphere, used to simulate the flexural deformations of the Earth

(physics) The branch of physics that uses statistical laws to make theoretical predictions about macroscopic systems of particles.

(mechanics) A mechanism that translates a continuous rotation into an intermittent rotary motion, using an intermittent gear where the drive wheel has a pin that reaches into a slot of the driven wheel and thereby advances it by one step, and having a raised circular blocking disc that locks the driven wheel in position between steps.

(physics) The sum of the potential energy and kinetic energy of a body or system

plural of Geneva mechanism