Warhead

A warhead is the forward section of a device that contains the explosive agent or toxic (biological, chemical, or nuclear) material that is delivered by a missile, rocket, torpedo, or bomb [Hansen, p.164]. Types of warheads include Explosive: An explosive charge is used to disintegrate the target and damage surrounding areas with a blast wave. Conventional: Chemicals such as gunpowder and high explosives store significant energy within their molecular bonds. This energy can be released quickly by a trigger, such as an electric spark. Blast: A strong shock wave is provided by the detonation of the explosive. Fragmentation: Metal fragments are projected at high velocity to cause damage or injury. Nuclear: A runaway nuclear fission (fission bomb) or nuclear fusion (Thermonuclear weapon) reaction causes immense energy release. Chemical: A toxic chemical, such as poison gas or nerve gas, is dispersed, designed to injure or kill human beings. Biological: An infectious agent, such as anthrax spores, is dispersed, which is designed to sicken or kill humans [Stephen, p. 237].

Sources:

Stephen I., (1998), The Costs and Consequences of U.S. Nuclear Weapons Since 1940. 234-240.Washington:Brookings Institution Press.