electrolysis


elec·trol·y·sis

noun \i-ˌlek-ˈträ-lə-səs\

: the process of removing unwanted hair by killing the hair root with an electric current

chemistry : the process of separating a liquid into its different chemical parts by passing an electric current through it

Full Definition of ELECTROLYSIS

1
a :  the producing of chemical changes by passage of an electric current through an electrolyte
b :  subjection to this action
2
:  the destruction of hair roots by an electrologist using direct current

Examples of ELECTROLYSIS

  1. She had electrolysis done on her upper lip.

First Known Use of ELECTROLYSIS

1834

elec·trol·y·sis

noun \i-ˌlek-ˈträl-ə-səs\   (Medical Dictionary)
plural elec·trol·y·ses \-ˌsēz\

Medical Definition of ELECTROLYSIS

1
a : the producing of chemical changes by passage of an electric current through an electrolyte b : subjection to this action
2
: the destruction of hair roots by an electrologist using direct current

electrolysis

noun    (Concise Encyclopedia)

Process in which electric current passed through a substance causes a chemical change, usually the gaining or losing of electrons (see oxidation-reduction). It is carried out in an electrolytic cell consisting of separated positive and negative electrodes (anode and cathode, respectively) immersed in an electrolyte solution containing ions or in a molten ionic compound. Reduction occurs at the cathode, where electrons are added that combine with positively charged cations in the solution. Oxidation occurs at the anode, where negatively charged anions give up electrons. Both thus become neutral molecules. For historical reasons, electric current is defined to flow in the opposite direction to the flow of electrons. Thus, current is said to flow from the cathode to the anode, even though electrons flow in the opposite direction. Electrolysis is used extensively in metallurgy to extract or purify metals from ores or compounds and to deposit them from solution (electroplating). Electrolysis of molten sodium chloride yields metallic sodium and chlorine gas; that of a strong solution of sodium chloride in water (brine) yields hydrogen gas, chlorine gas, and sodium hydroxide (in solution); and that of water (with a low concentration of dissolved sodium chloride or other electrolyte) yields hydrogen and oxygen.

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