recontaminate
/riːkənˈtæmɪneɪt/
verb
- To contaminate something again after it has been cleaned or decontaminated.
- If you touch the clean surface with dirty hands, you will recontaminate it.
- The water supply was treated, but a broken pipe could recontaminate it.
- Be careful not to recontaminate the surgical instruments after sterilization.