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acoustic able to make musical sounds without using electricity. [1/2 definitions]
asbestos a mineral that separates into fibers and does not catch fire or conduct electricity. Asbestos is used to make fireproof materials and insulation.
battery a device that makes electricity by using chemical reactions. Batteries are used to power many things, including cars, flashlights, toys, and watches. [1/3 definitions]
cell a device that makes electricity by chemical means. [1/4 definitions]
charge the amount of electricity in an object. Charge causes electrical energy to flow in a current. The movement of electrical energy from one point to another is caused by a difference between the charges at the two points. An electrical charge can be positive or negative. [1/12 definitions]
circuit breaker a switch or other device that automatically breaks an electric circuit when too much electricity flows through it.
conductor anything that carries or allows passage of heat, electricity, or sound. [1/3 definitions]
copper a reddish brown metal that is one of the chemical elements. Copper is used to make pipes, because it does not easily rust. It is also used to make wires, because it is an excellent conductor of electricity. It can be combined with other metals to make alloys such as brass and bronze. (symbol: Cu) [1/4 definitions]
current the flow of electricity in a wire or other conductor. [1/4 definitions]
dynamo the British word for the part of the car that generates electricity for the car. Dynamo has the same meaning as generator. [1/2 definitions]
electric of or having to do with electricity. [2/3 definitions]
electrical having to do with electricity; electric.
electrocute to kill by electricity.
engine a machine that uses energy from fuel or electricity to do work, such as to move. [1/2 definitions]
generator a machine or device that produces electricity or other energy. [1/2 definitions]
hydroelectric having to do with producing electricity by means of the energy created by moving water.
insulate to cover, line, or surround with a material that reduces or stops the movement of heat, electricity, or sound.
jigsaw a saw that can be used to cut sharp corners or curved designs. Jigsaws are usually powered by electricity.
lightning natural electricity produced in thunderclouds. Lightning appears as a bright flash or streak of light in the sky. [1/2 definitions]
line1 a wire or set of wires that carries electricity or electronic signals. [1/10 definitions]
metal any solid mineral element that exhibits certain characteristics such as the ability to conduct heat or electricity. Most metals may be shaped under heat or pressure. Iron, silver, copper, and gold are metals.