bacteriophage
C2Technical/Scientific
Definition
Meaning
A virus that infects and replicates within bacteria.
Any virus that specifically targets bacterial cells, often used as a tool in genetic engineering, biotechnology, and as a potential therapeutic agent to treat bacterial infections (phage therapy).
Linguistics
Semantic Notes
A highly specific term from virology and microbiology. While the core meaning is stable, its usage extends into applied fields like medicine and synthetic biology.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or spelling. The abbreviated form 'phage' is equally common in both varieties in scientific contexts.
Connotations
Neutral technical term in both varieties.
Frequency
Equally low-frequency and specialised in both varieties, confined to scientific and medical discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
[bacteriophage] + [verb: infects, lyses, replicates] + [bacterium][researchers] + [verb: isolated, used, engineered] + [a bacteriophage]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “No common idioms.”
Usage
Context Usage
Business
Rare, except in biotech/pharma contexts discussing phage-based therapeutics or diagnostics.
Academic
Core term in microbiology, genetics, molecular biology, and medical papers.
Everyday
Extremely rare. Might be encountered in popular science articles about antibiotic alternatives.
Technical
The primary register. Used precisely in lab protocols, research articles, and clinical trials for phage therapy.
Examples
By Part of Speech
verb
British English
- The virus will bacteriophage the culture overnight.
- We attempted to bacteriophage the biofilm.
American English
- The lab is working to bacteriophage the resistant strain.
- They successfully bacteriophaged the infection in the model.
adverb
British English
- The culture lysed bacteriophagically within hours.
American English
- The bacteria were destroyed bacteriophagically.
adjective
British English
- The bacteriophage therapy showed promising initial results.
- A bacteriophage cocktail was prepared.
American English
- The bacteriophage treatment is undergoing clinical trials.
- They studied the bacteriophage DNA sequence.
Examples
By CEFR Level
- Scientists study bacteriophages to fight bad bacteria.
- Bacteriophages are viruses that can destroy specific bacterial cells, offering a potential alternative to antibiotics.
- The lytic cycle of the bacteriophage culminates in the lysis of the host bacterium, releasing progeny virions. Researchers are engineering temperate bacteriophages to deliver targeted genetic modifications.
Learning
Memory Aids
Mnemonic
Think: 'Bacteria' + 'phage' (from Greek 'phagein' meaning 'to eat'). A 'bacteria-eater'.
Conceptual Metaphor
PREDATOR (of bacteria), TOOL/WEAPON (against bacterial infections), PROGRAM (injecting genetic code into a host).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Direct Russian translation 'бактериофаг' is a perfect cognate. No trap, but note the spelling and stress (фаг).
Common Mistakes
- Mispronunciation: stressing the first syllable (/ˈbæk.tər/).
- Misspelling: 'bacteriophague', 'bacteriophage'.
- Using as a general term for 'antibiotic'.
Practice
Quiz
What is the primary ecological role of a bacteriophage?
FAQ
Frequently Asked Questions
It is a subject of debate. Like all viruses, bacteriophages are not considered living organisms by many definitions because they cannot reproduce or carry out metabolic processes outside a host cell.
No. Bacteriophages are highly specific to bacterial cells and do not infect human or animal cells.
The therapeutic use of bacteriophages to treat pathogenic bacterial infections, especially those resistant to antibiotics.
They were independently discovered by Frederick Twort (1915) and Félix d'Herelle (1917). D'Herelle coined the term 'bacteriophage'.