(evolutionary biology) The relatively rapid appearance, during the Cambrian Period around 541 million years ago, of most major animal phyla, as demonstrated in the fossil record.

(by extension) The rapid appearance of anything.

plural of explosive lens

A highly specialized type of shaped charge, used mainly in nuclear weapons, composed of several explosive charges arranged so as to control the shape of the detonation wave passing through them.

(aviation, medicine) A situation where the ambient air pressure suddenly drops faster than the air in the lungs can escape, creating a risk of barotrauma to the lung tissue.

A food made from bacon wrapped around a filling of spiced sausage and crumbled bacon, then smoked or baked.

plural of bacon explosion

plural of low explosive

An explosive compound whose rate of decomposition proceeds through the material at less than the speed of sound.

plural of controlled explosion