Such fusion weapons are generally referred to as thermonuclear weapons or more colloquially as hydrogen bombs -LRB- abbreviated as H-bombs -RRB- , as they rely on fusion reactions between isotopes of hydrogen -LRB- deuterium and tritium -RRB- .

A hydrogen bomb , or fusion bomb , is a nuclear weapon which utilizes hydrogen isotopes -LRB- deuterium and tritium -RRB- as another type of fuel .
