Wiktionary
hydrogen warhead
n. a small thermonuclear device in the warhead of a missile
Usage examples of "hydrogen warhead".
The missile the Speeds had destroyed had used an anti-hydrogen warhead that light came from the total annihilation of matter, not from a conventional fusion explosion.
Each of them carried a Hyadean catalyzed hydrogen warhead of power intermediate between high explosive and nuclear, and was capable of taking out a city block.