|CSF the clear colourless fluid in the spaces inside and around the spinal cord and brain|
cerebrospinal fluid n.
The serumlike fluid that circulates through the ventricles of the brain, the cavity of the spinal cord, and the subarachnoid space, functioning as a shock absorber.
|cerebrospinal fluid (sěr'ə-brō-spī'nəl, sə-rē'brō-) Pronunciation Key
The clear fluid that fills the cavities of the brain and covers the surfaces of the brain and spinal cord. It lubricates the tissues and cushions them from shock and injury.