refining process
nounUK /rɪˈfaɪnɪŋ ˈprəʊsɛs/
US /rɪˈfaɪnɪŋ ˈprɑːsɛs/
A refining process is the way people clean something to make it pure.
The refining process turns raw sugar into the white sugar we put in tea.
OTHER MEANINGS
2. The steps used to turn crude oil into useful fuels like petrol.
At the refinery, the refining process separates crude oil into petrol and diesel.
3. The careful work of making an idea or plan better by improving small details.
The team's refining process made the new app easier to use.
4. The way metals are heated and treated to remove unwanted bits.
Gold goes through a refining process to remove dirt and other metals.