electro-, electr-, electri-

The study of laryngeal (voice box) functions or movements using a variety of electronic assemblies.

An electromechanical device that enables a laryngectomized person to speak.

Laryngectomized is the partial or total surgical removal of the larynx or organ of voice production containing the vocal cords.

When the electromechanical instrument is placed against the region of the laryngectomy (voice box surgery), a buzzing sound is produced, which is converted into simulated speech by the movements of the organs of articulation; such as the lips, tongue, and glottis.

1. A type of chorea characterized by a continuous sequence of sudden, violent, rapid, jerky movements that appear synchronized but are involuntary.

Chorea consists of jerky spasmodic movements of the limbs, trunk, and facial muscles, common to various diseases of the central nervous system.

2. A progressively fatal spasmodic disorder, possibly of malarial origin, occurring chiefly in Italy.

It is a severe form of Sydenham's chorea, in which the spasms are rapid and of a specially rapid, jerky character.

Sydenham's chorea is a neurological disease of children and pregnant women, sometimes following rheumatic fever, in which those affected experience involuntary jerking movements of the body and it is also defined as an acute neurologic disorder that emerges several months following a streptococcal ("strep") infection.

It is named after Thomas Sydenham (1624-1689), English physician.

Chemical deposition of a metal on a material, without electrolytic or electroplating action.

In chemistry, deposition is the settling of particles (atoms or molecules) or sediment from a solution, suspension and mixture, or vapor onto a pre-existing surface.

1. A process that produces thin metallic coatings on objects without the application of external electric current.
2. Plating from an aqueous solution on any surface, caused by an autocatalytic chemical reduction.
3. The deposition of a metallic coating, usually nickel, on a component by chemical means rather than by electroplating.

The component is immersed in a solution containing a reducing agent.

4. A chemical reduction process which, once initiated, is autocatalytic or something whose occurrence at one point increases the probability that it will occur again at another point.

The process is similar to electroplating except that no outside current is needed and the metal ions are reduced by chemical agents in the plating solutions, and deposit on the substrate.

An advantage of electroless plating with current is that there is a more uniform thickness of the surface coating.

An electric device used for shocking an animal into insensibility before killing or slaughtering it.

A chandelier or other support for electric lights based on a combination of electro- + (chande)lier.

1. Disintegration of a vesical calculus (urinary calculus or stones formed or retained in the bladder) with electricity
2. The disintegration of vesical or urinary bladder calculi (stones) by an application of an electric current.

Someone who removes excess hair, moles, or other blemishes on the body by means of electrolysis.

The science of electricity.

The conversion of electrical energy into light energy which is produced without heat by passing an alternating current through a phosphorescent substance from a high-frequency electric discharge: The designers of Lorna's new kitchen decided to install two ceiling lamps that used the principles of electroluminescence to produce illumination that is cooler than normal lucency.

A display in which various combinations of segments may be activated by applying voltages to produce any desired numerical or other characters: Electroluminescent display devices present data, usually in the form of numbers or letters, when alternating current is applied to their electroluminescent segments.

A tool with an extra semiconductor control layer which permits storing of images for controllable periods of at least an hour: The desired image is projected onto the electroluminescent display screen with ultraviolet light, and it is completely erased with infrared radiation.

A light source consisting of a suitable phosphor placed between sheet metal electrodes; one of which is essentially transparent, separated by only a few thousandths of an inch (0.001 cm), with an AC voltage applied between the electrodes: The architect included several electroluminescent panels in the iridescent design of the new home, providing adequate light for the rooms without generating extra heat.

A panel, made up of photoconductive and electroluminescent layers that are used as either a positive or a negative image intensifier, depending on the amplitude and the phase of its two power supply voltages: The electroluminescent-photoconductive image intensifier receives the image and converts it into electrical signals; and subsequently, the electroluminescent layer converts the signals into a brighter light.