To break down a chemical compound using electrical current, or to decompose a substance by passing an electric current through it.
From Greek 'elektron' and 'lysis' (meaning loosening/breaking). The term was developed in the early 19th century as electrochemistry emerged.
When you electrolyse water, you're literally splitting H₂O molecules—electricity rips apart the chemical bonds holding them together, which is why this process is crucial for producing hydrogen fuel.
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