refine
US /rɪˈfaɪn/
・UK /rɪ'faɪn/
B1
verb
- To change slightly in order to improve it
- To narrow down your search to a smaller number
- To make a liquid cleaner by removing something
other
- To improve something by making small changes, in order to make it better
- To purify or cleanse something
Examples
Sugar cane is refined into sugar.
The information system is constantly refined and updated.