grey matter: meaning, definition, pronunciation and examples
B2Neutral, used in both formal (technical) and informal (colloquial) contexts.
Quick answer
What does “grey matter” mean?
The brownish-grey nerve tissue of the brain and spinal cord, composed of neuronal cell bodies, dendrites, and unmyelinated axons. It is the central processing area of the nervous system, responsible for higher functions.
Audio
Pronunciation
Definition
Meaning and Definition
The brownish-grey nerve tissue of the brain and spinal cord, composed of neuronal cell bodies, dendrites, and unmyelinated axons. It is the central processing area of the nervous system, responsible for higher functions.
Intelligence, intellect, or mental capability; often used figuratively to refer to someone's brainpower or thinking capacity.
Dialectal Variation
British vs American Usage
Differences
The spelling: UK 'grey matter', US 'gray matter'. The figurative usage is slightly more common in US informal contexts. No difference in anatomical definition.
Connotations
Identical in both varieties. In figurative use, it can carry a slightly humorous or self-deprecating tone.
Frequency
The figurative sense is more frequent in everyday language than the anatomical sense in both varieties. The anatomical term is common in medical/neuroscience contexts.
Grammar
How to Use “grey matter” in a Sentence
[possessive] + grey matter (e.g., his grey matter)the + grey matter + of + [noun phrase] (e.g., the grey matter of the cerebrum)[verb] + grey matter (e.g., stimulate grey matter)Vocabulary
Collocations
Examples
Examples of “grey matter” in a Sentence
verb
British English
- (Not standard; verb forms do not derive from the noun phrase 'grey matter')
American English
- (Not standard; verb forms do not derive from the noun phrase 'grey matter')
adverb
British English
- (Not applicable)
American English
- (Not applicable)
adjective
British English
- (Not standard; adjectival use is rare. Possible: 'a grey-matter issue', hyphenated compound modifier.)
American English
- (Not standard; adjectival use is rare. Possible: 'a gray-matter deficiency', hyphenated compound modifier.)
Usage
Meaning in Context
Business
Rare. Possibly in humorous reference to problem-solving: 'We need to apply some grey matter to this sales strategy.'
Academic
Common in neuroscience, psychology, and biology for the anatomical tissue. Figurative use appears in pedagogical contexts.
Everyday
Primarily figurative, encouraging thought: 'Come on, use your grey matter!'
Technical
Standard term in neuroanatomy, referring to CNS tissue distinct from white matter.
Vocabulary
Synonyms of “grey matter”
Strong
Neutral
Weak
Watch out
Common Mistakes When Using “grey matter”
- Using it as a countable noun in the figurative sense (e.g., 'He has a great grey matter'). *Incorrect*. It is non-count: 'He has a lot of grey matter.' Confusing it with 'white matter' (the myelinated nerve fibres).
FAQ
Frequently Asked Questions
Both are correct. 'Grey matter' is the British English spelling, while 'gray matter' is the American English spelling. The meaning is identical.
Not directly. You wouldn't say 'He is a grey matter.' Instead, you say 'He has a lot of grey matter' or use it figuratively: 'We need his grey matter on this problem.'
In neuroanatomy, the opposite tissue is 'white matter,' which consists of myelinated nerve fibres. Figuratively, antonyms include 'brawn' or 'muscle.'
Yes, it is a standard, formal term in anatomy and neuroscience. Its figurative use is informal and colloquial.
The brownish-grey nerve tissue of the brain and spinal cord, composed of neuronal cell bodies, dendrites, and unmyelinated axons. It is the central processing area of the nervous system, responsible for higher functions.
Grey matter: in British English it is pronounced /ˌɡreɪ ˈmætə(r)/, and in American English it is pronounced /ˌɡreɪ ˈmæt̬ər/. Tap the audio buttons above to hear it.
Phrases
Idioms & Phrases
- “Use your grey matter!”
- “A puzzle to get the grey matter working.”
Learning
Memory Aids
Mnemonic
Think of a grey, wrinkly BRAIN. 'Grey' describes its colour, 'matter' describes its substance. Together, they are the 'matter' of your mind that solves puzzles painted in shades of 'grey'.
Conceptual Metaphor
THE MIND IS A PHYSICAL SUBSTANCE (specifically, brain tissue). INTELLIGENCE IS A TANGIBLE RESOURCE.
Practice
Quiz
In a formal neuroscience paper, 'grey matter' most precisely refers to: