An unusual rise in sea level on a coast due to the action of high winds.

A surge protector.

plural of power surge

plural of surge suppressor

An appliance designed to protect electrical devices from voltage spikes by limiting the voltage supplied to an electric device by either blocking or by shorting to ground any unwanted voltages above a safe threshold.

plural of surge protector

plural of pyroclastic surge

plural of storm surge

(UK) Increased testing for, and tracing of, people with coronavirus within a particular area, in an attempt to study and limit the spread.