Epicenter (noun)

1. The point on the Earth's surface that is directly above the focus of an earthquake.
2. The central point, place, or area where an event, activity, or problem originates or is concentrated.

Origin:

The word epicenter comes from the greek words epicenter, epi means "upon" and kentron means "center".

Examples:

1. The earthquake's epicenter was located in the mountains.
2. The city was the epicenter of the outbreak.
3. The epicenter of the storm was in the Gulf of Mexico.
4. The epicenter of the financial crisis was the housing market.
5. The epicenter of the conflict was the disputed territory.