biocide: meaning, definition, pronunciation and examples
C1/C2Technical / Scientific / Environmental
Quick answer
What does “biocide” mean?
A substance or preparation that kills living organisms.
Audio
Pronunciation
Definition
Meaning and Definition
A substance or preparation that kills living organisms.
A chemical agent (such as a pesticide, herbicide, or fungicide) used to control or destroy unwanted organisms, often in industrial, agricultural, or environmental contexts.
Dialectal Variation
British vs American Usage
Differences
No significant lexical difference. Spelling is consistent. UK English might more frequently pair it with 'biocidal' as an adjective.
Connotations
Identical: carries strong connotations of chemical intervention, environmental harm, and toxicity in both regions.
Frequency
Equally low-frequency in general language but standard in environmental science, agriculture, and industry in both the UK and US.
Grammar
How to Use “biocide” in a Sentence
[biocide] + [verb: kills, controls, eradicates] + [organism][adj: potent, regulated] + [biocide][prep: without, containing] + [biocide]Vocabulary
Collocations
Examples
Examples of “biocide” in a Sentence
verb
British English
- The hull was biocided to prevent fouling.
- Regulations limit the ability to biocide certain areas.
American English
- The cooling tower water must be biocided regularly.
- They biocided the entire crop, which was controversial.
adverb
British English
- The agent acts biocidally against a range of fungi.
American English
- The substance functions biocidally in aqueous solutions.
Usage
Meaning in Context
Business
Discussed in manufacturing, shipping (anti-fouling paints), and agricultural chemical industries regarding product compliance and safety.
Academic
Central in environmental science, toxicology, microbiology, and agricultural studies papers.
Everyday
Rare. Might appear in news about environmental pollution or food safety scandals.
Technical
Precise term in chemistry, material science (e.g., paint additives), water treatment, and wood preservation.
Vocabulary
Synonyms of “biocide”
Vocabulary
Antonyms of “biocide”
Watch out
Common Mistakes When Using “biocide”
- Misspelling as 'biocite' or 'biocid'.
- Using interchangeably with 'antibiotic' (which targets bacteria specifically).
- Confusing 'biocide' (kills) with 'biostatic' (inhibits growth).
FAQ
Frequently Asked Questions
Not exactly. While many disinfectants are biocides (they kill microorganisms), 'biocide' is a broader legal/technical term that includes agents targeting larger organisms like plants (herbicides) and animals (rodenticides).
They are designed to be toxic to specific life forms. Their environmental impact depends on specificity, persistence, and dosage. Non-target organisms can be harmed, leading to negative ecological effects.
Yes. The term describes function, not origin. For example, concentrated acetic acid (vinegar) can act as a natural herbicide/biocide, and some plant extracts have biocidal properties.
'Biocidal' implies killing a wide range of living organisms. 'Antibacterial' is specifically active against bacteria. An antibacterial agent is a type of biocide, but not all biocides are antibacterial (some target only weeds or fungi).
A substance or preparation that kills living organisms.
Biocide is usually technical / scientific / environmental in register.
Biocide: in British English it is pronounced /ˈbaɪəʊsaɪd/, and in American English it is pronounced /ˈbaɪoʊsaɪd/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “[No common idioms for this technical term]”
Learning
Memory Aids
Mnemonic
Think 'BIO' (life) + 'CIDE' (killing, as in suicide, homicide). A 'biocide' is a life-killer.
Conceptual Metaphor
CHEMICAL WARFARE (against pests/microbes), PURIFICATION THROUGH DESTRUCTION.
Practice
Quiz
Which of the following is NOT typically considered a type of biocide?