Definition of Air-launched ballistic missile

An air-launched ballistic missile or ALBM is a ballistic missile launched from an aircraft. This class of missile never saw active use. The only known missile of this type, the AGM-48 Skybolt, intended to be launched from a B-52 Stratofortress bomber, was in development by the United States Air Force, with Great Britain as a customer. In 1962, with technically difficulties and costs mounting, the program was cancelled, with the United States and Great Britain concentrating on the UGM-27 Polaris submarine-launched ballistic missile instead.