1. (Science: chemistry) The process where an electric current is passed through an electrolytic solution or other appropriate medium, causing a chemical reaction. Similar to what happens within a battery.
2. (Science: procedure) The process where an electric current is used to destroy tumours.
3. (Science: dermatology) The removal of unwanted body hair by electrocuting the hair roots with an electrified needle.
Origin: gr. Lysis = dissolution