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con•tam•i•nate



Pronunciation: (
v.kun-tam'u-nāt";
n., adj.kun-tam'u-nit, -nāt"),
[key]
v., -nat•ed, -nat•ing,
n., adj.


v.t.
1. to make impure or unsuitable by contact or mixture with something unclean, bad, etc.: to contaminate a lake with sewage.
2. to render harmful or unusable by adding radioactive material to: to contaminate a laboratory.

n.
something that contaminates or carries contamination; contaminant.

adj.
Obs.contaminated.

Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.

contaminantcontamination
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