To separate dissolved substances or ions from a liquid using electrical current passed through a semipermeable membrane.
From electro- + dialyze (to perform dialysis). Created as a verb form in the mid-1800s as chemists needed a specific term for this electrochemical process.
When you electrodialyze salt water, the positive and negative ions actually move in opposite directions toward different electrodes, leaving purified water in the middle—it's like electricity choreographing a molecular dance.
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