hyperloop

noun3

1. •
   A theoretical high-speed transportation system, proposed by Elon Musk, in which pressurized capsules ride on an air cushion driven by linear induction motors and air compressors through reduced-pressure tubes.

   • Musk began developing another transportation project in 2012, something he calls the Hyperloop. — 2012
2. •
   A control structure in which a loop repeats until either a stopping condition is met or all possible values of the looping index have been checked.
3. •
   A quantum mechanical paradox resulting from the observer being a product of the observations that it makes.