-
- To save this word, you'll need to log in.
third ventricle
noun
: the median unpaired ventricle of the brain bounded by parts of the telencephalon and diencephalon
Examples of third ventricle in a Sentence
Recent Examples on the Web
Colloid brain cysts are benign tumors that develop in or near the third ventricle, which is in the center of the brain.
—Isabella Cueto, STAT, 3 Nov. 2023
The consistent pathology of the disorder allowed von Economo to localize the lethargic symptoms of encephalitis lethargica to the posterior wall of the third ventricle, near the oculomotor nuclei.
—Neuroskeptic, Discover Magazine, 15 Apr. 2018
The 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
These examples are automatically compiled from online sources to
illustrate current usage. Opinions expressed in the examples do not represent those of
Merriam-Webster or its editors.
Send us feedback
about these examples.
Word History
First Known Use
1615, in the meaning defined above
Dictionary Entries Near third ventricle
Cite this Entry
“Third ventricle.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/third%20ventricle. Accessed 15 Nov. 2024.
Medical Definition
third ventricle
noun
: the median unpaired ventricle of the brain bounded by parts of the telencephalon and diencephalon
Love words? Need even more definitions?
Merriam-Webster unabridged
Share