# CNS

CEFR C1 · Noun

Source: https://englishreference.com/word/cns
Updated: 2026-05-11

## Definition

Stands for Central Nervous System. The part of your body that includes the brain and the spinal cord, which controls how you move and feel.

For teachers: Abbreviation for Central Nervous System. The primary part of the nervous system consisting of the brain and spinal cord, responsible for processing sensory information and coordinating bodily activity.

## Examples

- The CNS controls most functions of the body and mind.
- Doctors performed several tests to see if the virus had reached the patient's CNS.
- The blood-brain barrier serves as a highly selective semipermeable border that protects the CNS from circulating toxins while allowing the passage of essential nutrients.

## Usage notes

- Usually used with the definite article 'the'.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.