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electrolysis

American  
[ih-lek-trol-uh-sis, ee-lek-] / ɪ lɛkˈtrɒl ə sɪs, ˌi lɛk- /

noun

  1. 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.

  2. the destruction of hair roots, tumors, etc., by an electric current.


electrolysis British  
/ ɪlɛkˈtrɒlɪsɪs /

noun

  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

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of electrolysis

First recorded in 1830–40; electro- + -lysis

Vocabulary lists containing electrolysis

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

PEM refers to proton exchange membrane electrolysis, a technology that uses an electrically powered membrane system to separate water into hydrogen and oxygen.

From Science Daily Aug. 11, 2026

However, the equipment used for electrolysis must withstand demanding chemical and electrical conditions, especially when salt is involved.

From Science Daily Aug. 11, 2026

According to the researchers, a 10 megawatt PEM electrolysis tank system currently costs approximately HK$17.8 million.

From Science Daily Aug. 11, 2026

The Welsh Government says it is monitoring the implementation of mandatory licencing schemes for acupuncture, dry needling, body piercing, electrolysis, tattooing and semi-permanent makeup and this "will inform any potential future extension to other procedures".

From BBC Jul. 5, 2026

The electrolysis separated the hydrogen and oxygen from each other.

From "The Martian" by Andy Weir

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