독성 물질, 오염 물질 또는 방사능의 유입으로 인해 불결해지거나 해롭게 되어 사용할 수 없게 된.
Made impure, harmful, or unsuitable for use by the introduction of poisonous, polluting, or infectious substances.
예문:
"The researchers found that the local groundwater had been contaminated by chemical runoff from the factory."
"Health officials warned the public not to consume the spinach as it might be contaminated with bacteria."
"Wearing protective gear is essential when handling contaminated equipment in a laboratory setting."