The phrase "silver electrodes" refers to two pieces of metal, made of silver, that are used in a scientific experiment or technology to conduct electricity. Full definition
I have simply used basic principles of chemistry to calculate how much silver would be deposited into distilled water (DW) when a given amount of electric current is passed through pure silver electrodes. (silvermedicine.org)
Put one silver electrode in each container by straddling the device over the 2 cups. (elixa.com)
In an interesting demonstration, swimming pool water was contaminated with 50 gallons of raw sewage that had been flushed through silver electrodes. (yumyucky.com)