| Subject | English | Japanese |
| gen. | n dark sweet liquid produced after the third heating in a thermal sugar-refining process | 三温糖 |
| phys. | electrolytic refining | 電解精製 (でんかい・せいせい) |
| gen. | n fire refining | 乾式製錬 |
| gen. | n oil refining | 石油精製 |
| gen. | n vs oil refining | 製油 news2 nf42 |
| isol. | re-refining | 再精製 |
| gen. | n refining process | 精製法 |
| gen. | n steam refining method | スチームリファイニング法 |
| gen. | n sugar refining | 精糖 (seitō) |
| therm.energ. | thermo-electrolytic refining | 熱電解精錬 |
| semicond. | zone refining | 帯域精製 |
| phys. | zone refining | ゾーン精製 (zōn-seisei) |