WordNet: rectify, refine

reduce to a fine, unmixed, or pure state; separate from extraneous matter or cleanse from impurities; "refine sugar"

• hypernym distill, make pure, purify, sublimate

rectify

• (englanti) rectification (derivationally related)
• (suomi) puhdistaa (synonyymi)

refine

• (englanti) refinement (derivationally related)

• (englanti) refiner (derivationally related)

• (englanti) refining (derivationally related)
• (suomi) jalostaa (synonyymi)