Meaning of supertask

su•per•task

Pronunciation: (s'pur-task", -täsk"), [key]
— n. 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.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.