motor

American  

[moh-ter] / ˈmoʊ tər /

noun

1. a comparatively small and powerful engine, especially an internal-combustion engine in an automobile, motorboat, or the like.

2. any self-powered vehicle.

3. a person or thing that imparts motion, especially a contrivance, as a steam engine, that receives and modifies energy from some natural source in order to utilize it in driving machinery.

4. Also called electric motor.  Electricity. a machine that converts electrical energy into mechanical energy, as an induction motor.

5. motors, stocks or bonds in automobile companies.

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adjective

1. pertaining to or operated by a motor.

2. of, for, by, or pertaining to motor vehicles.

   motor freight.

3. designed or for automobiles, their drivers, or their passengers.

   The hotel has a motor lobby in its parking garage for picking up and discharging passengers.

4. causing or producing motion.

5. Physiology. conveying an impulse that results or tends to result in motion, as a nerve.

6. Psychology, Physiology. Also of, relating to, or involving muscular movement.

   a motor response; motor images.

verb (used without object)

1. to ride or travel in an automobile; drive.

   They motored up the coast.

verb (used with object)

1. Chiefly British. to drive or transport by car.

   He motored his son to school.

motor British  

/ ˈməʊtə /

noun

1. 1. the engine, esp an internal-combustion engine, of a vehicle

   2. ( as modifier )

      a motor scooter

2. Also called: electric motor.  a machine that converts electrical energy into mechanical energy by means of the forces exerted on a current-carrying coil placed in a magnetic field

3. any device that converts another form of energy into mechanical energy to produce motion

4. an indispensable part or player that moves a process or system along

5. 1. a car or other motor vehicle

   2. as modifier

      motor spares

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adjective

1. producing or causing motion

2. physiol

   1. of or relating to nerves or neurons that carry impulses that cause muscles to contract

   2. of or relating to movement or to muscles that induce movement

verb

1. (intr) to travel by car

2. (tr) to transport by car

3. informal (intr) to move fast; make good progress

4. (tr) to motivate

motor Scientific  

/ mō′tər /

1. A machine that uses energy, such as electric or chemical energy (as from burning a fuel), to produce mechanical motion.

2. See also engine

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1. Involving the muscles or the nerves that are connected to them.

2. Compare sensory

Other Word Forms

• multimotor
  noun

Etymology

Origin of motor

1580–90; < Latin mōtor mover, equivalent to mō- (variant stem of movēre to move ) + -tor -tor

Explanation

A motor runs your car, whizzes the blender and gets your golf cart going: it's simply a machine that converts energy into motion. Coming to us from a Latin word that means "to move," motor is certainly connected to the world of motion. Without the innovation of Ford motors, most of America wouldn't be able to get anywhere today. These days the motor is undergoing some serious revisions, as engineers look for a way to power things with less gasoline and more sunshine.

Example Sentences

Quarterly energy exports were more than twice the value of motor vehicles and 4.6 times higher than forestry products.

From The Wall Street Journal • May 28, 2026

Mice lacking mGluR1 show motor and synaptic problems, features that overlap with the kinds of dysfunction seen in neurodegenerative diseases.

From Science Daily • May 27, 2026

ALS, a progressive and terminal motor neuron disease, robs a person of the ability to move and, ultimately, to breathe, according to the Mayo Clinic.

From Los Angeles Times • May 20, 2026

In an axial flux motor, the electromagnetic field is parallel to the motor’s axis of rotation, instead of perpendicular in a conventional electric motor.

From Barron's • May 20, 2026

There were trucks and motor vehicles carving tracks in the road, which froze overnight and then turned to mud again during the day.

From "A Thousand Sisters" by Elizabeth Wein

Related Words

• cylinder
• generator
• transformer
• turbine