Pronunciation: (ep'u-sen"tur), [key]
1. Also,epicentrum. Geol.a point, directly above the true center of disturbance, from which the shock waves of an earthquake apparently radiate.
2. a focal point, as of activity: Manhattan's Chinatown is the epicenter of the city's Chinese community. Also, esp. Brit.,ep'i•cen"tre.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.