or co·seis·mic

[ koh-sahyz-muh l, -sahys- ]
/ koʊˈsaɪz məl, -ˈsaɪs- /


of, relating to, or being in a line, curve, etc., connecting or comprising points on the earth's surface at which an earthquake wave arrives simultaneously.

Words nearby coseismal

Origin of coseismal

First recorded in 1850–55; co- + seismal Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for coseismal

British Dictionary definitions for coseismal



/ (kəʊˈsaɪzməl) /


of or designating points at which earthquake waves are felt at the same time
(of a line on a map) connecting such points


such a line on a map
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012