intervertebral disc
C2Technical / Medical
Definition
Meaning
A cartilaginous pad located between two adjacent vertebrae in the spine, acting as a shock absorber and facilitating movement.
The structure which both cushions and separates the bony vertebrae, enabling spinal flexibility. It consists of a tough outer fibrous ring (annulus fibrosus) and a soft, gel-like centre (nucleus pulposus).
Linguistics
Semantic Notes
A hyponym (specific type) of 'disc'. In everyday speech, often shortened to 'disc' or 'disk' (esp. US) in contexts like 'slipped disc', but the full term 'intervertebral disc' is used for technical precision.
Dialectal Variation
British vs American Usage
Differences
Spelling: 'disc' is standard in UK medical texts, while 'disk' is common in US medical contexts, though 'disc' is also widely used. In the phrase 'herniated disc/disk', both forms are used in the US, with 'disk' slightly more common. 'Slipped disc' is the dominant term in both varieties for the layperson.
Connotations
Identical in both varieties; purely anatomical/medical. No difference in connotation.
Frequency
The term itself is of equal technical frequency in both varieties. In general public discourse, the shortened form 'disc'/'disk' in 'slipped disc/disk' or 'bad back' is more common.
Vocabulary
Collocations
Grammar
Valency Patterns
The [adj] intervertebral disc [verb]...surgery on/for a herniated intervertebral discpain from a degenerated intervertebral discthe intervertebral disc between L4 and L5Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “slipped disc”
- “to have a disc out”
Usage
Context Usage
Business
Rare. May appear in health insurance documents or occupational health reports (e.g., 'injury leading to intervertebral disc herniation').
Academic
Common in medical, biological, biomechanical, and physiotherapy texts and lectures. Used with full precision.
Everyday
Rare in full form. Shortened to 'disc' in phrases like "I've got a bad disc in my back."
Technical
The primary context. Used in diagnosis, surgical reports, radiology, anatomy, and physiotherapy.
Examples
By Part of Speech
verb
British English
- The surgeon will carefully discet the damaged tissue.
American English
- The procedure aims to decompress the disc space.
adjective
British English
- He underwent intervertebral disc surgery last year.
American English
- The MRI showed clear intervertebral disk pathology.
Examples
By CEFR Level
- The doctor said the pain is from a disc in my back.
- A slipped disc can cause a lot of pain and needs rest.
- Herniation occurs when the soft centre of an intervertebral disc pushes through the outer layer.
Learning
Memory Aids
Mnemonic
Think: INTER (between) + VERTEBRAL (spine bones) + DISC (round cushion). So, it's the cushion BETWEEN the spine bones.
Conceptual Metaphor
Shock absorber of the spine / Spinal washer / Spine's cushion.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid translating as 'disk' in the IT sense (like 'hard disk' = жёсткий диск). In Russian, it's 'межпозвоночный диск'. The anatomical term is a direct calque, so the trap is minimal.
- The main trap is using the full term 'intervertebral disc' in casual conversation instead of the simpler 'disc problem' or 'back injury'.
Common Mistakes
- Misspelling: 'intervertabral', 'intervertibral'.
- Mispronunciation: stressing 'vertebral' incorrectly (it's /vɜːˈtiː.brəl/ not /ˈvɜː.tɪ.brəl/).
- Using 'intervertebral disc' in non-technical small talk.
Practice
Quiz
What is the primary function of an intervertebral disc?
FAQ
Frequently Asked Questions
In UK medical English, 'disc' is standard. In US medical English, 'disk' is common, but 'disc' is also acceptable. The choice is often stylistic within US publications.
For medical professionals, 'herniated disc' is the precise term describing the protrusion of the disc's nucleus. 'Slipped disc' is a non-technical, layperson's term often used to describe the same condition.
The disc itself has poor blood supply, so it does not 'heal' like other tissues. However, symptoms from a herniation often improve as the body reabsorbs the leaked material and inflammation decreases.
They are located between the vertebral bodies from the second cervical vertebra (C2) down to the sacrum (between L5 and S1). There are no discs between the skull and C1, or between C1 and C2.