/rek"teuh fuy'/ , v.t., rectified, rectifying .
1. to make, put, or set right; remedy; correct: He sent them a check to rectify his account.
2. to put right by adjustment or calculation, as an instrument or a course at sea.
3. Chem. to purify (esp. a spirit or liquor) by repeated distillation.
4. Elect. to change (an alternating current) into a direct current.
5. to determine the length of (a curve).
6. Astron. , Geog. to adjust (a globe) for the solution of any proposed problem.
[ 1350-1400; ME rectifien rectifier rectificare, equiv. to L rect ( us ) RIGHT + -ificare -IFY ]
Syn. 1. mend, emend, amend. 2. adjust, regulate, straighten.
Ant. 1. worsen, muddle.