Abt system

noun \ˈäp(t)ˌs-, ˈa-\

Definition of Abt system

  1. :  a system of tracking for mountain railroads in which two or more cograils are used and so arranged that the teeth are not opposite on any two of the rails

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Origin and Etymology of abt system

after Roman Abt †1933 Swiss railroad engineer who devised it


First Known Use: 1886


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