Etymology
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epicenter (n.)

1885 in seismology, "point on the earth's surface directly above the center or focus of an earthquake," from Modern Latin epicentrum (1879 in geological use); see epi- + center (n.). Related: Epicentral (1866).

updated on September 07, 2014

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Definitions of epicenter from WordNet

epicenter (n.)
the point on the Earth's surface directly above the focus of an earthquake;
Synonyms: epicentre
From wordnet.princeton.edu, not affiliated with etymonline.