Decomposition by passing current (12)

I believe the answer is:

electrolysis

(Other definitions for electrolysis that I've seen before include "Method of removing hair roots" , "Means of chemical decomposition" , "Method of inducing chemical change by passing current from anode to cathode" , "Method for removing unwanted hair" , "Method of chemical decomposition in fluids" .)

I've seen this clue in The Times.

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