/rek"teuh fuy'euhr/ , n.
1. a person or thing that rectifies.
2. Elect. an apparatus in which current flows more readily in one direction than the other, for changing an alternating current into a direct current.
3. the apparatus that in distillation separates the most volatile material by condensing it; condenser.
[ 1605-15; RECTIFY + -ER 1 ]