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con·tam·i·nate  (kn-tm-nt)
tr.v. con·tam·i·nated, con·tam·i·nat·ing, con·tam·i·nates
1. To make impure or unclean by contact or mixture.
2. To expose to or permeate with radioactivity.
n. (-nt)
One that contaminates; a contaminant.

[Middle English contaminaten, from Latin contminre, contmint-; see tag- in Indo-European roots.]

con·tami·native adj.
con·tami·nator n.
Synonyms: contaminate, befoul, foul, poison, pollute, taint
These verbs mean to make dirty or impure: Pesticides contaminated the lake. Mud befouled my shoes. Noxious fumes fouled the air. Drugs poisoned her mind. Exhaust polluted the air. Improper storage tainted the food.

contaminate  /kntmnet/  v. [T] -nated, -nating, -nates to make unclean, impure, unfit for use or consumption: The drinking water was contaminated with gasoline. -n. [U] contamination /kntmnen/. Contaminate

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