Pronunciation: (ig-zakt'), [key]
1. strictly accurate or correct: an exact likeness; an exact description.
2. precise, as opposed to approximate: the exact sum; the exact date.
3. admitting of no deviation, as laws or discipline; strict or rigorous.
4. capable of the greatest precision: exact instruments.
5. characterized by or using strict accuracy: an exact thinker.
6. Math.(of a differential equation) noting that the collection of all terms, equated to zero, is an exact differential.
1. to call for, demand, or require: to exact respect from one's children.
2. to force or compel the payment, yielding, or performance of: to exact money; to exact tribute from a conquered people.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.