Topic: CHEMISTRY
| Date: | 1300-1400 |
| Language: | Old French |
| Origin: | residu, from Latin residuum, from residere; RESIDE |
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res‧i‧due

1HC [uncountable and countable] a substance that remains on a surface, in a container etc and cannot be removed easily, or that remains after a chemical process
Rinse off any soap residue.
Rinse off any soap residue.2 [countable] formal the part of something that is left after the rest has gone or been taken away
