the demolition or disassembly of a machine or building
teardown in American English
(ˈtɛərˌdaun)
noun
a taking apart; disassembly
Word origin
[1925–30; n. use of v. phrase tear down]This word is first recorded in the period 1925–30. Other words that entered Englishat around the same time include: buildup, chain reaction, gimmick, hot spot, off-line