1. hydrogen bomb, enormously destructive nuclear weapon based on the sudden release of atomic energy. h-bomb a nuclear weapon that releases atomic energy by union of light (hydrogen) nuclei at high temperatures to form helium [syn: hydrogen bomb, h-bomb, fusion bomb, thermonuclear bomb ]. 2. An H-bomb is a bomb in which energy is released from hydrogen atoms. hydrogen bomb H2O the chemical sign for water (hydrogen bomb).
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