Krytrons are sophisticated triggers for the detonation of nuclear bombs.
In midafternoon we actually felt the detonation of two bombs a couple of miles away.
1670s, "explosion accompanied by loud sound," from French détonation, from Medieval Latin detonationem (nominative detonatio), from Latin detonare "to thunder down, to release one's thunder, roar out," from de- "down" (see de-) + tonare "to thunder" (see thunder (n.)). Sense of "act of causing to explode" (mid-18c.) developed in French.