supertask

[soo-per-task, -tahsk]
noun Logic.
  1. a paradox resulting from the notion that a task requiring an infinite number of steps could be performed in a finite time by halving the duration of each step.

Origin of supertask

First recorded in 1970–75; super- + task
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018