noun, often attributive \mə-ˈshēn\

: a piece of equipment with moving parts that does work when it is given power from electricity, gasoline, etc.

: a vehicle (such as a car or motorcycle)

: a person or group that does something efficiently, quickly, or repeatedly like a machine

Full Definition of MACHINE

a archaic :  a constructed thing whether material or immaterial
b :  conveyance, vehicle; especially :  automobile
c archaic :  a military engine
d :  any of various apparatuses formerly used to produce stage effects
e (1) :  an assemblage of parts that transmit forces, motion, and energy one to another in a predetermined manner
(2) :  an instrument (as a lever) designed to transmit or modify the application of power, force, or motion
f :  a mechanically, electrically, or electronically operated device for performing a task
g :  a coin-operated device <a cigarette machine>
h :  machinery —used with the or in plural
a :  a living organism or one of its functional systems
b :  one that resembles a machine (as in being methodical, tireless, or consistently productive) <a gifted publicist and quote machine — John Lancaster>
c (1) :  a combination of persons acting together for a common end along with the agencies they use
(2) :  a highly organized political group under the leadership of a boss or small clique
:  a literary device or contrivance introduced for dramatic effect

Examples of MACHINE

  1. Shovels are tools; bulldozers are machines.
  2. Do you know how to operate this machine?
  3. The machine is working properly.
  4. He was bragging about his new machine.
  5. The coach turned the team into a scoring machine.
  6. My younger brother is an eating machine.
  7. a politician who dared to challenge the local party machine
  8. Their army is a well-oiled machine.

Origin of MACHINE

Middle French, from Latin machina, from Greek mēchanē (Doric dialect machana), from mēchos means, expedient — more at may
First Known Use: circa 1545

Other Mechanical Engineering Terms

centrifuge, differential, flange, lathe, linchpin, pinion, plenum, ratchet, traction



: to shape (something) by using a machine


Full Definition of MACHINE

transitive verb
:  to process by or as if by machine; especially :  to reduce or finish by or as if by turning, shaping, planing, or milling by machine-operated tools
ma·chin·abil·i·ty also ma·chine·abil·i·ty \-ˌshē-nə-ˈbi-lə-tē\ noun
ma·chin·able also ma·chine·able \-ˈshē-nə-bəl\ adjective

Examples of MACHINE

  1. The parts of the engine have been precisely machined.

First Known Use of MACHINE


Other Mechanical Engineering Terms

centrifuge, differential, flange, lathe, linchpin, pinion, plenum, ratchet, traction


noun    (Concise Encyclopedia)

Device that amplifies or replaces human or animal effort to accomplish a physical task. A machine may be further defined as a device consisting of two or more parts that transmit or modify force and motion in order to do work. The five simple machines are the lever, the wedge, the wheel and axle, the pulley, and the screw; all complex machines are combinations of these basic devices. The operation of a machine may involve the transformation of chemical, thermal, electrical, or nuclear energy into mechanical energy, or vice versa. All machines have an input, an output, and a transforming or modifying and transmitting device. Machines that receive their input energy from a natural source (such as air currents, moving water, coal, petroleum, or uranium) and transform it into mechanical energy are known as prime movers; examples include windmills, waterwheels, turbines, steam engines, and internal-combustion engines.


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