nerve fiber
C1Technical / Medical / Academic
Definition
Meaning
A long, slender projection of a nerve cell (neuron) that conducts electrical impulses away from the cell body.
The fundamental structural and functional unit of the nervous system, responsible for transmitting signals; also used metaphorically to describe a source of courage or resilience in a person's character.
Linguistics
Semantic Notes
The primary meaning is anatomical/biological. In extended metaphorical use, it is often pluralised ('nerve fibres') and refers to the physical or psychological makeup that gives someone strength.
Dialectal Variation
British vs American Usage
Differences
Spelling: British English uses 'fibre', American English uses 'fiber'. The spelling is the only consistent difference.
Connotations
Identical in both variants. The metaphorical use is equally understood but less frequent than the technical sense.
Frequency
Far more common in technical/medical contexts than in everyday speech in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
Nerve fibre + verb (transmits, carries, conducts)Adjective (damaged, sensory) + nerve fibrePrepositional phrase (in the spinal cord, of the neuron) following nerve fibreVocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “to have nerves of steel (related metaphorical concept)”
- “to get on someone's nerves (related lexical item)”
Usage
Context Usage
Business
Rarely used, except possibly in biotechnology or health insurance contexts.
Academic
Common in biology, medicine, neuroscience, and psychology textbooks and research.
Everyday
Uncommon. If used, typically in a simplified explanation of health issues (e.g., 'a pinched nerve fibre').
Technical
The primary domain. Precisely used in neurology, anatomy, physiology, and medical diagnostics.
Examples
By Part of Speech
verb
British English
- The signal is fibre-optically transmitted (analogous technical compound).
American English
- The surgeon will carefully fiberize the area (invented, non-standard).
adjective
British English
- The nerve-fibre layer was clearly visible under the microscope.
American English
- He studied nerve-fiber regeneration in mice.
Examples
By CEFR Level
- The doctor explained that pain travels along tiny nerve fibres to the brain.
- A serious injury can damage these nerve fibres.
- Multiple sclerosis is a disease that damages the protective sheath around nerve fibres.
- Each nerve fibre is responsible for transmitting specific types of information, such as touch or temperature.
- The study focused on the differential conductivity of myelinated versus unmyelinated nerve fibres.
- Advanced imaging techniques now allow us to visualise the degeneration of individual nerve fibres in vivo.
Learning
Memory Aids
Mnemonic
Think of a FIBRE optic cable carrying light signals; a NERVE FIBRE carries electrical signals in your body.
Conceptual Metaphor
THE NERVOUS SYSTEM IS A TELEPHONE/COMMUNICATION NETWORK (with nerve fibres as wires/cables).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'нервное волокно' (direct equivalent).
- Avoid translating 'fibre' as 'клетчатка' (dietary fibre).
- In metaphorical contexts, it does not map directly to 'сила воли' (willpower).
Common Mistakes
- Misspelling 'fibre'/'fiber'.
- Confusing 'nerve fibre' with the whole 'nerve' (which is a bundle of fibres).
- Using it as a countable noun without an article ('Damage to nerve fibre' instead of 'a nerve fibre' or 'nerve fibres').
Practice
Quiz
What is the core function of a nerve fibre?
FAQ
Frequently Asked Questions
No. A single nerve fibre (axon) is part of a neuron. A 'nerve' is an anatomical structure containing many bundles of such fibres, along with connective tissue.
Yes, though less commonly than 'nerve' alone. E.g., 'The ordeal tested every nerve fibre in his body,' meaning it tested his utmost resilience.
British English spells it 'nerve fibre', American English uses 'nerve fiber'.
It is a standard term in neuroscience, human biology, medicine (especially neurology), physiology, and related life sciences.