| 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. | Mathematics. (of a differential equation) noting that the collection of all terms, equated to zero, is an exact differential. |
| 7. | to call for, demand, or require: to exact respect from one's children. |
| 8. | to force or compel the payment, yielding, or performance of: to exact money; to exact tribute from a conquered people. |

ex·act (ĭg-zākt') adj.
[Latin exāctus, past participle of exigere, to weigh out, demand : ex-, ex- + agere, to weigh; see ag- in Indo-European roots.] ex·act'a·ble adj., ex·act'ness n., ex·ac'tor, ex·act'er n. |