[verb kuh n-tam-uh-neyt; noun, adjective kuh n-tam-uh-nit, -neyt]
- 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.
- 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
SynonymsSee more synonyms on Thesaurus.com
1. defile, pollute, taint, infect, poison, corrupt.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for uncontaminated
In contact with germless air the uncontaminated must never ferments.Fragments of science, V. 1-2
"I'm glad to meet one uncontaminated American citizen in this city," he said.The Art of Disappearing
John Talbot Smith
For his dreams had been of an Arabian Houri, uncontaminated by the west.Tartarin de Tarascon
How I love them for the clean, uncontaminated body with which they blessed my spirit.Memoirs of John R. Young
The love of sex for sex would have been uncontaminated and pure.Commentary on Genesis, Vol. I
- not having been polluted, infected, or made impure
- to make impure, esp by touching or mixing; pollute
- to make radioactive by the addition of radioactive material
- archaic contaminated
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
Word Origin and History for uncontaminated
Online Etymology Dictionary, © 2010 Douglas Harper
- To make impure or unclean by contact or mixture.
- To expose to or permeate with radioactivity.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.