: the median unpaired ventricle of the brain bounded by parts of the telencephalon and diencephalon
Example Sentences
Recent Examples on the WebThe other option is a procedure called an endoscopic third ventriculostomy (ETV), which entails placing a tiny hole at the bottom of the third ventricle of the brain so cerebrospinal fluid can drain more easily. Korin Miller, Health.com, 7 Dec. 2021
Word History
First Known Use
1615, in the meaning defined above
Medical Definition
third ventricle
noun
: the median unpaired ventricle of the brain bounded by parts of the telencephalon and diencephalon