klebs-loffler bacillus
very lowtechnical/historical/scientific
Definition
Meaning
The bacterium Corynebacterium diphtheriae, which causes diphtheria.
A historical term for the causative agent of diphtheria, named after its discoverers Edwin Klebs and Friedrich Löffler.
Linguistics
Semantic Notes
This is a historical eponymous term, now largely superseded by the modern taxonomic name Corynebacterium diphtheriae. It is primarily encountered in historical medical texts.
Dialectal Variation
British vs American Usage
Differences
The term is equally rare and technical in both varieties. The spelling with the umlaut (Löffler) is standard, though it may sometimes be anglicized to 'Loeffler' in non-specialist texts.
Connotations
Historical, medical, precise. No variation between UK and US.
Frequency
Extremely rare in general discourse; used only in specific historical or microbiological contexts.
Vocabulary
Collocations
Grammar
Valency Patterns
The Klebs-Löffler bacillus [verb: was discovered, is cultured, causes]Vocabulary
Synonyms
Strong
Neutral
Weak
Usage
Context Usage
Academic
Used in historical reviews of bacteriology or medical history lectures.
Everyday
Virtually never used.
Technical
Used in specialized medical history or microbiology texts to refer to the original identification.
Examples
By Part of Speech
adjective
British English
- The Klebs-Löffler theory was pivotal.
American English
- Klebs-Löffler research advanced bacteriology.
Examples
By CEFR Level
- Diphtheria is caused by a bacterium.
- The bacterium responsible for diphtheria was historically called the Klebs-Löffler bacillus.
- Prior to the widespread use of modern nomenclature, Corynebacterium diphtheriae was commonly referred to in the literature as the Klebs-Löffler bacillus.
Learning
Memory Aids
Mnemonic
Klebs Löffler Back-Illness: Think of Klebs and Löffler backing (bacillus) an illness (diphtheria).
Conceptual Metaphor
THE CAUSE IS A NAMED ENTITY (Personification of a pathogen via its discoverers).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid direct Cyrillic transliteration. Note the correct spelling with 'c' ('bacillus') not 'k'. The term is specific and not a general word for 'rod' or 'stick'.
Common Mistakes
- Misspelling as 'Klebs-Loeffler' (acceptable anglicization) or 'Klebs-Löffler bacteria' (less precise). Incorrectly treating it as a common noun.
Practice
Quiz
What does the term 'Klebs-Löffler bacillus' refer to?
FAQ
Frequently Asked Questions
No, it is a historical term. The correct modern scientific name is Corynebacterium diphtheriae.
Edwin Klebs (German-Swiss) and Friedrich Löffler (German) were bacteriologists who identified and cultivated the bacterium in the 1880s.
Only in contexts discussing the history of medicine or bacteriology. In current medical or microbiological writing, use Corynebacterium diphtheriae.
'Bacillus' (Latin for 'small rod') was a common generic term for rod-shaped bacteria. Corynebacterium diphtheriae is rod-shaped, though not a member of the genus Bacillus.