H-bomb n. The hydrogen bomb, a thermonuclear weapon that releases atomic energy by union of hydrogen nuclei at high temperatures to form helium. The force of its explosion may range from one to hundreds of megatons of TNT equivalent.
... firing his pistol within inches of the loud-speakers and it sounded like an H-bomb going off. She grabbed my wrist and dragged me toward a ... — Lone Star Planet • Henry Beam Piper and John Joseph McGuire
...
