a combining form meaning “earthquake,” used in the formation of compound words: seismograph.
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How to use seismo- in a sentence
Fawzi began wondering where in Nifflheim all the drilling rigs, and the seismo-trucks, were.The Cosmic Computer | Henry Beam Piper
British Dictionary definitions for seismo-
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