Turing machine
noun
Tu·ring machine ˈtu̇r-iŋ- 
ˈtyu̇r-
: a hypothetical computing machine that by using only a limited set of very simple computational steps is able to perform any task for which an efficiently computable algorithm is known
Word History
Etymology
A. M. Turing †1954 English mathematician
First Known Use
1937, in the meaning defined above