[ih-lek-trol-uh-sis, ee-lek-]
Physical Chemistry. the passage of an electric current through an electrolyte with subsequent migration of positively and negatively charged ions to the negative and positive electrodes.
the destruction of hair roots, tumors, etc., by an electric current.

1830–40; electro- + -lysis

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World English Dictionary
electrolysis (ɪlɛkˈtrɒlɪsɪs)
1.  the conduction of electricity by a solution or melt, esp the use of this process to induce chemical changes
2.  the destruction of living tissue, such as hair roots, by an electric current, usually for cosmetic reasons
[C19: from electro- + -lysis]

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Word Origin & History

1834, introduced by Faraday on the suggestion of the Rev. William Whewell (17941866), Eng. polymath, from electro- (see electric) + Gk. lysis "a loosening," from lyein "to loosen, set free" (see lose). Originally of tumors, later (1909) of hair removal.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

electrolysis e·lec·trol·y·sis (ĭ-lěk-trŏl'ĭ-sĭs, ē'lěk-)

  1. chemical change, especially decomposition, that is produced in an electrolyte by an electric current.

  2. Destruction of living tissue, especially that of the hair roots, by means of an electric current applied with a needle-shaped electrode.

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American Heritage
Science Dictionary
electrolysis   (ĭ-lěk-trŏl'ĭ-sĭs)  Pronunciation Key 
A process in which a chemical change, especially decomposition, is brought about by passing an electric current through a solution of electrolytes so that the electrolyte's ions move toward the negative and positive electrodes and react with them. If negative ions move toward the anode, they lose electrons and become neutral, resulting in an oxidation reaction. This also happens if atoms of the anode lose electrons and go into the electrolyte solution as positive ions. If positive ions move toward the cathode and gain electrons, becoming neutral, a reduction reaction takes place. Electrolysis is used for many purposes, including the extraction of metals from ores, the cleaning of archaeological artifacts, and the coating of materials with thin layers of metal (electroplating).
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American Heritage
Cultural Dictionary
electrolysis [(i-lek-trol-uh-sis)]

In chemistry, any process that brings about a chemical reaction by passing electric current through a material.

Note: The most common form of electrolysis is electroplating, in which a thin coat of metal is deposited on a solid object.
The American Heritage® New Dictionary of Cultural Literacy, Third Edition
Copyright © 2005 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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Example sentences
In addition, to prevent further corrosion, artifacts from the submarine will be
  placed in an electrolysis tank for several years.
Electrolysis separates metal from ore by using acid and electricity.
If electricity could be produced cheaply for the electrolysis process, then
  we'd be on to something.
Another approach is electrolysis, which zaps hydrogen free from water using
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