What does electrolyze mean?
To electrolyze is to break down a chemical compound into its component elements or simpler substances by passing an electric current through it. The process depends on the compound being able to conduct electricity, typically as a molten material or a dissolved ionic solution. When technicians electrolyze water, for example, the current splits each molecule into hydrogen gas at one electrode and oxygen gas at the other; when industry electrolyzes molten salt or brine, valuable products such as chlorine and sodium emerge at the terminals. The verb belongs firmly to scientific and technical registers, appearing in textbooks, laboratory manuals, and engineering literature rather than everyday conversation, and it pairs naturally with words like water, brine, and solution. Its noun counterpart, electrolysis, names the process itself. As interest in green energy grows, the word has gained renewed prominence because electrolyzing water is a leading method for producing clean hydrogen fuel.
verbTo decompose a chemical compound, especially a liquid or solution, by means of an electric current.
- To decompose or separate a chemical compound into its constituent elements by passing an electric current through it.
"The plant electrolyzes water to produce hydrogen fuel on site."
"Industrially, manufacturers electrolyze molten sodium chloride to produce chlorine gas and metallic sodium."
"In her chemistry class, students learned to electrolyze water and collect the hydrogen and oxygen released at the electrodes."
Every hydrogen molecule produced by splitting water with electricity exists because someone chose to electrolyze it — the word literally means 'to loosen with electricity.'
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of electrolyze
The word electrolyze was coined in the early nineteenth century from 'electro-,' relating to electricity, combined with the Greek-derived suffix '-lyze,' from 'lyein' meaning to loosen or dissolve. It arose alongside the noun electrolysis during the era when pioneers such as Humphry Davy and Michael Faraday were demonstrating that electric currents could decompose chemical compounds. The '-lyze' element ties it to a wider family including analysis, paralysis, and catalysis, all built on the same Greek root.
Related word forms
How electrolyze is actually used
A technical term used mainly in chemistry, physics, and engineering contexts. The British spelling is often 'electrolyse,' though 'electrolyze' is widely accepted in both varieties. The verb is most commonly used in the active voice with the substance being split as its direct object.
Easily confused with electrolyze
An electrolyte is a substance that conducts electricity when dissolved, while to electrolyze is the action of using electricity to break a substance down.