foreshock

About 0.01 uses per million words.

Meaning

1. noun A small earth tremor which precedes the mainshock in an earthquake sequence.
2. noun Any shock or disturbance that precedes an event

Similar words

afterquake foreshower preearthquake pre-echo foreshow foreshift foreshadower foreshot premonstration foreshine

Often followed by

region and activity boundary of is sequence sequences regions

Word family

foreshocks