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| central portion of the earth believed to be composed mainly of iron and nickel in a molten state |
| outer layer of the earth, about 22 miles deep under the continents and 6 miles deep under the oceans |
| epicentre or epicenter (ˈɛpɪˌsɛntə) | |
| —n | |
| 1. | Compare focus the point on the earth's surface directly above the focus of an earthquake or underground nuclear explosion |
| 2. | informal the absolute centre of something: the epicentre of world sprinting |
| [C19: from New Latin epicentrum, from Greek epikentros over the centre, from | |
| epicenter or epicenter | |
| —n | |
| [C19: from New Latin epicentrum, from Greek epikentros over the centre, from | |
| epi'central or epicenter | |
| —adj | |
| epicenter (ěp'ĭ-sěn'tər) Pronunciation Key
The point on the Earth's surface that is directly above the focus (the point of origin) of an earthquake. The epicenter is usually the location where the greatest damage associated with an earthquake occurs. See Note at earthquake. |