1. (

• pollute ,
• foul ,
• contaminate

) make impure; "The industrial wastes polluted the lake" ;

2. (

• contaminate ,

) make radioactive by adding radioactive material; "Don't drink the water;

1. (

• dirty ,
• contaminating ,

) spreading pollution or contamination; especially radioactive contamination; "the air near the foundry was always dirty"; "a dirty bomb releases enormous amounts of long-lived radioactive fallout" ;

2. (

• corrupting ,
• contaminating

) that infects or taints ;