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adjective
GeologyRelating to the points of maximum disturbance in an earthquake; specifically designating a region that has undergone maximum disturbance in an earthquake. Also as noun (rare).
Origin
Mid 19th century; earliest use found in Robert Mallet (1810–1881), civil engineer and scientist. From ancient Greek μείζων greater, comparative of μέγας great + ancient Greek σεισμός earthquake + -al.
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