contamination
B2Formal
Definition
Meaning
The process of making something impure, polluted, or unsafe by introducing a harmful or undesirable substance.
The action of corrupting or spoiling something by mixing it with something inferior, incorrect, or harmful; can be applied to physical substances, information, culture, language, or data.
Linguistics
Semantic Notes
Primarily used as a mass noun, though countable uses exist (e.g., 'various contaminations'). Implies an external agent causing impurity. Often has a negative, serious, or technical connotation.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling is identical. Pronunciation differs slightly (see IPA).
Connotations
Similar negative connotations in both varieties. Slightly more frequent in American media discussions of environmental issues.
Frequency
Comparably frequent in both varieties; a core technical and general vocabulary item.
Vocabulary
Collocations
Grammar
Valency Patterns
contamination of + NOUN (source)contamination by/with + NOUN (agent)contamination from + NOUN (source)contamination in/on + NOUN (location)Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “[Not a strongly idiomatic word; no common idioms centre on it.]”
Usage
Context Usage
Business
Refers to supply chain issues, product recalls, or liability, e.g., 'The contamination scare led to a massive recall.'
Academic
Used in environmental science, chemistry, biology, and public health research, e.g., 'The study measured heavy metal contamination in the estuary.'
Everyday
Used concerning food safety, news about polluted water or beaches, e.g., 'They closed the beach due to contamination from the sewage leak.'
Technical
Specific usage in labs (cross-contamination of samples), nuclear industry (radioactive contamination), IT (data contamination).
Examples
By Part of Speech
verb
British English
- The spill could contaminate the local aquifer.
- Take care not to contaminate the sterile swab.
American English
- The oil leak contaminated the whole watershed.
- The compromised data set contaminated the analysis.
adverb
British English
- [No standard adverb form from 'contamination'; 'contaminatingly' is non-standard/rare.]
American English
- [No standard adverb form from 'contamination'; 'contaminatingly' is non-standard/rare.]
adjective
British English
- The contaminated land required extensive remediation.
- They issued a warning about the contaminated batch of spices.
American English
- The contaminated site was declared a Superfund location.
- Authorities seized the contaminated produce from the market.
Examples
By CEFR Level
- The water has contamination. Do not drink it.
- The food was bad because of contamination.
- Scientists found contamination in the river near the factory.
- To avoid contamination, always wash your hands before cooking.
- The investigation revealed widespread contamination of the groundwater by industrial chemicals.
- Cross-contamination in the kitchen can occur if you use the same knife for raw meat and vegetables.
- The linguistic anthropologist studied the cultural contamination of indigenous traditions by global media.
- The forensic team had to establish whether the DNA sample showed evidence of contamination from investigators at the scene.
Learning
Memory Aids
Mnemonic
Think of CON-TAM-IN-ATION: a CON (with) a TAM (tampon, suggesting absorption) of something bad IN a place (ATION = action/state). The action of a bad thing getting IN and being absorbed.
Conceptual Metaphor
CONTAMINATION IS A STAIN/INFECTION (It spreads, corrupts, and is difficult to remove completely).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct calque from 'контаминация' which is a rare, specialised linguistic term meaning 'blend' (e.g., 'brunch'). English 'contamination' is much broader and negative.
- Do not confuse with 'загрязнение' (pollution) which is a narrower subset; contamination can be biological, radiological, etc., not just physical dirt.
Common Mistakes
- Using it as a verb (the verb is 'contaminate').
- Confusing with 'containment' (which means keeping something under control).
- Misspelling as 'contimination' or 'contamenation'.
Practice
Quiz
In which context is the word 'contamination' LEAST likely to be used?
FAQ
Frequently Asked Questions
'Pollution' typically refers to environmental harm from human activity (air/water/noise pollution). 'Contamination' is broader, focusing on introducing an impure/ harmful agent into something previously clean/pure (can be a lab sample, a culture, information). All pollution is contamination, but not all contamination is called pollution (e.g., bacterial contamination of a Petri dish).
Extremely rarely. It almost always carries a negative connotation of harm, spoilage, or corruption. In linguistics, 'contamination' can be a neutral term for a blend of words, but this is a specialised, less common usage.
Primarily uncountable (mass noun): 'The contamination was severe.' It can be countable when referring to distinct types or instances: 'The lab tested for several possible contaminations.' The uncountable use is far more frequent.
A specific term meaning the transfer of harmful substances (like bacteria or allergens) from one object, surface, or food to another. It's a key concept in food safety (e.g., using the same cutting board for raw chicken and salad) and in scientific laboratories.
Collections
Part of a collection
Environment
B1 · 47 words · Nature, ecology and environmental issues.