contaminant
kuhn-TAM-uh-nuhnt
/kənˈtæmɪnənt/
A polluting or poisonous substance that makes something impure, unclean, or unfit for use.
Focuses on the foreign substance that spoils the purity of a host medium (like water, soil, or food).
The story behind the word. Comes from Latin 'contaminare', meaning 'to defile or corrupt by touch'. The root 'tangere' (to touch) emphasizes how contact with an impure element spoils the whole mass.
Word relationships
- pollutant: Pollutant emphasizes environmental damage, whereas contaminant emphasizes spoiling the purity or safety of a specific substance.
- adulterant: Adulterant is an added substance that deliberately lowers the quality of food or drugs, whereas contaminant is often unintentional.
- purifier: A purifier removes foreign substances to restore cleanliness.
Commonly confused with
- pollutant: While often interchangeable, a contaminant renders something impure by contact; a pollutant actively causes ecological harm to natural cycles.
Word family
- contaminate (verb): To make impure or unclean by contact or mixture.
- contamination (noun): The state of being contaminated or the act of contaminating.
Collocations
- chemical contaminant
- trace contaminant
- remove contaminants
Example sentences
- "Engineers discovered chemical contaminants in the town's drinking water well network." Groundwater analysis
- "Heavy metals acting as soil contaminants prevented native plants from recolonizing the site." Soil science
Memory hook
CONtaminant = COMe into Contact and ruin purity. One bad touch ruins pure water.
When not to use
Do not use for general visible physical clutter like uncollected boxes on a sidewalk.
Fun facts
- The Latin root 'tangere' also gives us words like 'tangible' and 'tactile'—all about touch!
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