cerebrospinal fluid

noun

: a colorless liquid that is comparable to serum, is secreted from the blood into the lateral ventricles of the brain, and serves chiefly to maintain uniform pressure within the brain and spinal cord

Examples of cerebrospinal fluid in a Sentence

Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
The brain disorder is caused by the accumulation of excessive cerebrospinal fluid in the brain’s ventricles, leading to a range of cognitive and physical problems, particularly issues with gait, coordination, and bladder control. Althea Legaspi, Rolling Stone, 21 July 2025 This condition involves an excess of cerebrospinal fluid that accumulates in the brain ventricles, affecting hearing, vision, and balance. Marina Watts, People.com, 27 May 2025 Joel, 76, canceled his upcoming concert dates Friday and shared he was diagnosed with normal pressure hydrocephalus, or NPH, a condition in which cerebrospinal fluid builds up inside the skull and presses on the brain. Rebecca Cohen, NBC news, 26 May 2025 According to Cleveland Clinic, the condition occurs when cerebrospinal fluid builds up inside the skull, pressing on the brain, affecting the ability to think and concentrate, as well as impacting memory and movement; treatment can involve implanting a shunt to drain the excess fluid. Gil Kaufman, Billboard, 16 July 2025 See All Example Sentences for cerebrospinal fluid

Word History

First Known Use

1828, in the meaning defined above

Time Traveler
The first known use of cerebrospinal fluid was in 1828

Browse Nearby Words

Cite this Entry

“Cerebrospinal fluid.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/cerebrospinal%20fluid. Accessed 4 Aug. 2025.

Kids Definition

cerebrospinal fluid

noun
ce·​re·​bro·​spi·​nal fluid
sə-ˌrē-brō-ˌspīn-ᵊl-
: a colorless fluid that occupies the cavities of the brain and spinal cord and the space between these and the membranes surrounding them

Medical Definition

cerebrospinal fluid

noun
: a liquid that is comparable to serum but contains less dissolved material, that is secreted from the blood into the lateral ventricles of the brain by the choroid plexus, circulates through the ventricles to the spaces between the meninges about the brain and spinal cord, and is resorbed into the blood through the subarachnoid sinuses, and that serves chiefly to maintain uniform pressure within the brain and spinal cord

called also spinal fluid

compare lymph

More from Merriam-Webster on cerebrospinal fluid

Last Updated: - Updated example sentences
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!