Refine
/rəˈfaɪn/
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Definition
(verb) To purify; reduce to a fine, unmixed, or pure state; to free from impurities.
Sentence Examples
Good day, lords. In what way can I refine upon my adroitness in aural comprehension?
Is Algeria's oil cheap to refine?
CEFR Practice Quiz
The engineer continued to ____ the design based on feedback from the initial testing phase.