Answer: fuzing

AnswerCrossword Clue
fuzingtube, cord, or the like, filled or saturated with combustible matter, for igniting an explosive
fuzingFUZE, to equip with a detonating device, also FUSE
fuzingto attach a fuse or fuze to (a bomb, mine, etc.)
fuzingmechanical or electronic device to detonate an explosive charge, esp. as contained in an artillery shell, a missile, projectile, or the like