epicentre
/ˈepɪsentə(r)/( <美> epicenter)
noun
1- the point on the earth's surface vertically above the focus of an earthquake震中。
1.1
- figurative the central point of something, typically a difficult or unpleasant situation〈喻〉（尤指困难或令人不快的局面的）中心, 集中点：
the patient was at the epicentre of concern.
病人受到各方关注。
派生词
epicentral
adjective词源
late 19th cent.: from Greek epikentros 'situated on a centre', from epi 'upon' + kentron 'centre'.