A delay-action bomb is an aerial bomb designed to explode some time after impact with the ground, with the bomb's fuses set to delay the explosion for times ranging from a few seconds to several weeks.
A delay-action bomb is an aerial bomb designed to explode some time after impact with the ground. Such bombs were used widely by British aviators during World War II. The fuses on the bombs could be set to delay the explosion for times ranging from a few seconds to several weeks.