- a small earthquake or tremor that follows a major earthquake.
- the effect, result, or repercussion of an event; aftermath; consequence: The aftershock of the bankruptcy was felt throughout the financial community.
- one of a series of minor tremors occurring after the main shock of an earthquakeCompare foreshock
- A less powerful earthquake that follows a more forceful one. Aftershocks usually originate at or near the focus of the main earthquakes they follow and can continue for days or months. They usually decrease in magnitude and frequency with time.