This is the 1779th most frequent French word.
contamination
The transfer of impurities, infection, or harmful substances.
This usage refers to physical pollution, specifically the uncleanliness of water caused by an external pollutant.
La contamination des eaux de la rivière due aux déchets industriels est préoccupante.
The contamination of the river waters due to industrial waste is concerning.
Here, 'contamination' is used metaphorically to indicate the influence or corruption of pure ideas by negative or biased prejudices.
La contamination des idées par des préjugés peut limiter une pensée ouverte.
The contamination of ideas by prejudices can limit open-minded thinking.
This usage specifies contamination in the biological sense, particularly the presence of harmful microorganisms in food items.