epicenter

باللغة العربية: مَرْكَز، مَرْكَز اَلزِّلْزَال، بُؤْرَة

1. The point on the land or water surface directly above the focus, or hypocentre, of an earthquake.
2. The point on the surface of the earth directly above an underground explosion.
3. The focal point of any activity, especially if dangerous or destructive. (figuratively)
4. The geographical area in which an ongoing disaster, illness, crisis, or other destructive event is currently most severe. (figuratively)

الجمع epicenters