Definition of "epicentre"

The epicentre isn't always the point of heaviest damage. Faults can be many kilometres long and seismic waves shake areas all along the fault.

2008, Michael Woods, Mary B. Woods, Earthquakes, Lerner Books, page 18

Eleven months after Moscow launched its full-scale invasion, Bakhmut and surrounding areas have become an epicenter of fighting, their importance growing as both sides have added forces to the battle.

2023 January 31, Matthew Mpoke Bigg, “Russia-Ukraine War: Russia Pours Fighters Into Battle for Bakhmut”, in The New York Times‎

Yan Cheng had cerebral palsy and died on January 29 while in the care of officials in Huajiahe township, Hongan county, more than 100 kilometres (62 miles) from Wuhan, the epicentre of the outbreak.

2020 February 6, Laurie Chen, “Communist officials fired after disabled Chinese boy died when relatives were put in coronavirus quarantine”, in South China Morning Post‎, archived from the original on 06 February 2020, Society‎

The records of disturbances epicentering closer to the station, notably those of 1914 in Los Santos Province of the Republic of Panama, about 120 miles from Balboa Heights, have usually been less satisfactory than this record […]

1916, Canal Record, volume 9, page 28