/ay'see dee"see/, adj. Slang.sexually responsive to both men and women; bisexual.[1940-45, for an earlier sense; 1960-65 for this use]alternating current or direct current.Also, A.C./D.C., ac/dc, a-c/d-c, a.c.-d.c.
* * *▪ Australian rock groupAustralian heavy metal band whose theatrical, high-energy shows placed them among the most popular stadium performers of the 1980s. The principal members were Angus Young (b. March 31, 1955, Glasgow, Scot.), Malcolm Young (b. Jan. 6, 1953, Glasgow), Bon Scott (original name Ronald Belford Scott; b. July 9, 1946, Kirriemuir, Angus, Scot.—d. Feb. 21, 1980, London, Eng.), Brian Johnson (b. Oct. 5, 1948, Newcastle upon Tyne, Tyne and Wear, Eng.), Phil Rudd (original name Phillip Rudzevecuis; b. May 19, 1954, Melbourne, Vic., Australia), and Cliff Williams (b. Dec. 14, 1949, Romford, Essex, Eng.).The Young brothers formed AC/DC in Sydney, Australia, in 1973 with Angus (famous for his schoolboy short-trousers outfit) on lead guitar and Malcolm on rhythm guitar. The rest of the band's lineup changed when the Youngs moved to Melbourne, and AC/DC's blues-based records and live appearances made them favourites in Australia by the mid-1970s. After relocating to London in 1976 and solidifying their lineup (with Scott as vocalist, Rudd on drums, Williams on bass, and the Youngs), AC/DC found success in Britain with Let There Be Rock (1977) and internationally with Highway to Hell (1979). AC/DC's rise was hampered by Scott's alcohol-related death in February 1980, but replacement Johnson's falsetto fit in well with the group's tight, clean metal punch and their raucous bad-boy image. The band's next album, Back in Black (1980), sold more than 10 million copies in the United States alone, and For Those About to Rock (1981) was also a million-seller. The early to mid-1980s was the band's peak period as a live group; a number of personnel changes occurred after that time.Gillian G. Gaar
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