In aviation, to jettison is to discard fuel, external stores or other expendable items. The item is usually jettisoned by operating a switch or handle; external stores may be separated from the aircraft by use of explosive bolts or a mechanism.
Zoe Lee Bettison is an Australian politician representing the South Australian House of Assembly seat of Ramsay for the South Australian Branch of the Australian Labor Party since the 2012 Ramsay by-election.
Oscar Bettison (born 19 September 1975) is a British/American composer known for large-scale chamber and large ensemble works. He has been described as possessing "a unique voice". His work has been described as having "An unconventional lyricism and a menacing beauty" and "pulsating with an irrepressible energy and vitality, as well as brilliant craftsmanship." He is a member of the composition faculty at the Peabody Institute. Bettison has recently been named a 2017 Guggenheim Fellow by the John Simon Guggenheim Foundation.