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

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.

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

(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.

plural of Geneva mechanism

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

(archaic) In the 19th century, engineering and other mechanical fields of expertise (comparable to performing arts and the fine arts).

Any mechanical (or other) system used to keep one or more variable parameters constant, or within specified bounds.