(engineering) The subfield of engineering concerned with designing and building machines and mechanical systems.

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.

The branch of the modern military that is transported by light fast vehicles (including jeeps and helicopters), now serving the function historically provided by a horse cavalry.

(physics) Of, or relating to statistical mechanics.

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

(physics) All of the physical laws of nature that account for the behaviour of the normal world, but break down when dealing with the very small (see quantum mechanics) or the very fast or very heavy (see relativity).

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

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

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