Definition of "electrified"

The electrified route to Corby will be served by the 21x4-car fleet of Class 360s cascaded from Greater Anglia, operating a half-hourly service under the EMR Electrics brand.

2019 October, Tony Miles, Philip Sherratt, “EMR kicks off new era”, in Modern Railways, page 53

Back in 1963, how could Beeching advocate closure of the electrified Liverpool-Southport commuter route, just because its books didn't balance? The busy North London line between Richmond and Broad Street was also for the axe, as was Leeds to Bradford and Ilkley.

2023 March 8, Howard Johnston, “Was Marples the real railway wrecker?”, in RAIL, number 978, page 50