electro-, electr-, electri-

1. A type of rocket propulsion in which the propellant is heated electrically; such as, an electric arc that is used to heat hydrogen gas in an arc-jet engine.
2. The propulsion of spacecraft by using an electric arc or other electric heater to bring hydrogen gas or other propellant to the high temperature required for maximum thrust; for example, an arc-jet engine.
3. Vehicular propulsion which involves electrical heating to raise the energy level of the propellant.

In contrast, chemical rockets use the chemical energy of one or more propellants to heat and to accelerate the decomposition products (monopropellants) or combustion products (bipropellants) for thrusting purposes.

In both instances, the high-energy propellant gases are exhausted through a nozzle where they are accelerated to a high velocity, and thrust is produced by reaction.

A recorder in which heat produces an image on the recording medium in response to the received signals.

1. In facsimile (fax) or an instrument that transmits and reproduces documents with digitized signals which are sent over telephone lines, a technique in which an image is produced on a recording medium by heat generated by electronic signals.
2. A type of electrochemical recording, used in facsimile equipment, in which the chemical change is produced principally by signal-controlled thermal action.

1. An electrothermal ammeter (instrument for measuring an electric current in amperes or basic units of electric current) employing a series resistor as a multiplier, and so measuring voltage instead of current.
2. An instrument which measures voltage and operates as an electrothermal ammeter, using a series resistor as a multiplier.

A reference to heat that is produced by electricity.

An instrument that depends for its operation on the healing effect of a current.

Examples include the thermocouple, bolometric (a tool that detects and measures small amounts of thermal radiation), hot-wire, and hot-strip instruments.

A branch of science concerned with the direct transformation of electric energy into heat.

The therapeutic heating or treatment of bodily tissues produced by the passage of electric currents through them.

The generation of heat with electricity to apply to the body surface to relieve pain.

The production of a thrombus (a stationary blood clot) within a blood vessel by introducing an electric current to coagulate the blood.

1. A system of electrodepositing tin on a base.
2. Electroplating an objecvt with tin.

Any electrosurgical cutting instrument used for medical treatment.

Electroexcision in which an electric current of high frequency, high voltage, and low amperage is used so that no body-tissue coagulation occurs.

1. A reference to electrotonus or the altered condition of a nerve or muscle during the passage of an electric current through it.
2. The modified condition of a motor nerve under the influence of a constant galvanic current.

A current induced in a nerve sheath without the creation of a new current by an action potential or a momentary change in electrical potential on the surface of a neuron or muscle cell.