Pronunciation: (pu-lOOt'),[key] —v.t.,-lut•ed, -lut•ing. 1. to make foul or unclean, esp. with harmful chemical or waste products; dirty: to pollute the air with smoke. 2. to make morally unclean; defile.
3. to render ceremonially impure; desecrate: to pollute a house of worship. 4. Informal.to render less effective or efficient: The use of inferior equipment has polluted the company's service.