|Compare foreshock one of a series of minor tremors occurring after the main shock of an earthquake|
|a screen or mat covered with a dark material for shielding a camera lens from excess light or glare.|
|a gadget; dingus; thingumbob.|
|aftershock (āf'tər-shŏk') Pronunciation Key
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.