contaminate

[ verb kuhn-tam-uh-neyt; noun, adjective kuhn-tam-uh-nit, -neyt ]
/ verb kənˈtæm əˌneɪt; noun, adjective kənˈtæm ə nɪt, -ˌneɪt /

verb (used with object), con·tam·i·nat·ed, con·tam·i·nat·ing.

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

noun

something that contaminates or carries contamination; contaminant.

adjective

Obsolete. contaminated.

Origin of contaminate

1375–1425; late Middle English contaminaten < Latin contāminātus, past participle of contāmināre to defile, spoil, equivalent to con- con- + -tāminare, verbal derivative of *tāmen something touched < *tag-s-men, equivalent to tag-, variant stem of tangere to touch + -s-men resultative noun suffix; cf. examen

Related forms

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for contaminate

British Dictionary definitions for contaminate

contaminate


verb (kənˈtæmɪˌneɪt) (tr)

to make impure, esp by touching or mixing; pollute
to make radioactive by the addition of radioactive material

adjective (kənˈtæmɪnɪt, -ˌneɪt)

archaic contaminated

Derived Forms

contaminable, adjectivecontaminant, nouncontaminative, adjectivecontaminator, noun

Word Origin for contaminate

C15: from Latin contamināre to defile; related to Latin contingere to touch
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Medicine definitions for contaminate

contaminate

[ kən-tămə-nāt′ ]

v.

To make impure or unclean by contact or mixture.
To expose to or permeate with radioactivity.

Related forms

con•tam•i•nant (-nənt) n.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.