cross-contamination
noun/ˌkrɒs kənˌtæmɪˈneɪʃn/
/ˌkrɔːs kənˌtæmɪˈneɪʃn/
[uncountable]- the process by which harmful bacteria spread from one substance to another
- Always cover raw food to prevent cross-contamination.
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cross-contamination