Contaminant,

Definition of Contaminant:

1. Biological, chemical, physical, or radiological substance (normally absent in the environment) which, in sufficient concentration, can adversely affect living organisms through air, water, soil, and/or food.

2. A polluting or poisonous substance that makes something impure.

How to use Contaminant in a sentence?

1. People were exposed to airborne contaminants.
2. We could not allow the contaminant to ruin the experiment because the outcome would determine our futures in the business.
3. Because water from mountain streams may contain disease-causing contaminant s, it is crucial that hikers bring a filtration device if they plan on drinking it.
4. Unfortunately, the compound created in Lab Test A has been rejected for commercial use and labeled a contaminant ; its use in soil fertilizer has been linked to cases of respiratory infection in test users, so further revision and testing will be necessary.