pollute: Meaning and Definition of

pol•lute

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. to render less effective or efficient: The use of inferior equipment has polluted the company's service.