n-tam-uh-neyt; n., adj. kuh
n-tam-uh-nit, -neyt]
verb, -nat⋅ed, -nat⋅ing, noun, adjective | 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. |
| 3. | something that contaminates or carries contamination; contaminant. |
| 4. | Obsolete. contaminated. |

contaminate con·tam·i·nate (kən-tām'ə-nāt')
v. con·tam·i·nated, con·tam·i·nat·ing, con·tam·i·nates
To make impure or unclean by contact or mixture.
To expose to or permeate with radioactivity.