Pronunciation: (ig-zakt'),[key] —adj. 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.
—v.t. 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.