colon bacillus: meaning, definition, pronunciation and examples
C2Technical / Historical
Quick answer
What does “colon bacillus” mean?
A bacterium, specifically the species now known as Escherichia coli, that normally inhabits the intestines but can cause disease.
Audio
Pronunciation
Definition
Meaning and Definition
A bacterium, specifically the species now known as Escherichia coli, that normally inhabits the intestines but can cause disease.
A dated medical term primarily referring to intestinal bacteria, often synonymous with *E. coli*, especially when discussing infections or historical bacteriology.
Dialectal Variation
British vs American Usage
Differences
No significant regional difference in meaning. Usage is equally rare and technical in both varieties.
Connotations
Primarily a term from early 20th-century medical history; may evoke images of outdated medical texts or public health campaigns.
Frequency
Extremely low frequency in both varieties, limited to historical medical contexts or popular science writing about the history of medicine.
Grammar
How to Use “colon bacillus” in a Sentence
N of colon bacilluscolon bacillus in (a medium)infected with colon bacillusVocabulary
Collocations
Examples
Examples of “colon bacillus” in a Sentence
adjective
British English
- The colon bacillus infection was traced to the water supply.
American English
- Colon bacillus contamination was the suspected cause.
Usage
Meaning in Context
Business
Not used.
Academic
Used historically in medical and microbiological papers; modern usage is rare and deliberately archaic.
Everyday
Virtually never used; laypeople would say 'E. coli' or 'food poisoning bug'.
Technical
Obsolete technical term. Modern professionals use the binomial nomenclature 'Escherichia coli'.
Vocabulary
Synonyms of “colon bacillus”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “colon bacillus”
- Using it in contemporary scientific writing.
- Confusing it with other intestinal pathogens like Salmonella or Shigella.
- Treating it as a current, precise synonym for all E. coli strains.
FAQ
Frequently Asked Questions
Essentially, yes. 'Colon bacillus' is an old, non-specific name for the bacterium now precisely classified as Escherichia coli (E. coli).
Modern microbiology uses precise Latin binomial nomenclature (e.g., Escherichia coli) to avoid ambiguity. 'Colon bacillus' is vague and does not distinguish between different species or strains of intestinal bacteria.
Only if you are deliberately invoking a historical perspective or quoting an old source. For contemporary discussion, 'E. coli' or 'Escherichia coli' is the correct and expected term.
No. The term could refer to the bacterium's presence in a healthy gut (as normal flora) or in a disease-causing (pathogenic) context, which often led to confusion that modern terminology aims to eliminate.
A bacterium, specifically the species now known as Escherichia coli, that normally inhabits the intestines but can cause disease.
Colon bacillus is usually technical / historical in register.
Colon bacillus: in British English it is pronounced /ˌkəʊlən bəˈsɪləs/, and in American English it is pronounced /ˌkoʊlən bəˈsɪləs/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine an **old colon** (large intestine) with a tiny **silly soldier** (bacillus/rod-shaped bacterium) living inside it. 'Colon' + 'Bacillus' = the old name for the gut bacterium.
Conceptual Metaphor
THE BODY IS A LANDSCAPE (the colon is a habitat). BACTERIA ARE INHABITANTS/INVADERS.
Practice
Quiz
In which context is the term 'colon bacillus' most appropriately used today?