sofar: Meaning and Definition of

so•far

Pronunciation: (sō'fär), [key]
— n.
  1. a system for determining a position at sea by exploding a charge under water and measuring the time the shock waves take to reach three widely separated shore stations at known distances from each other.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.