a relatively small earthquake that precedes a greater one by a few days or weeks and originates at or near the focus of the larger earthquake.
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How to use foreshock in a sentence
The foreshocks started in April when trade organization the VAB alleged that Nielsen had undercounted traditional TV viewership during the pandemic.Future of TV Briefing: How the future of TV shaped up in 2021 | Tim Peterson | December 22, 2021 | Digiday
British Dictionary definitions for foreshock
a relatively small earthquake heralding the arrival of a much larger one. Some large earthquakes are preceded by a series of foreshocks: Compare aftershock
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