tegmentum

noun

teg·men·tum teg-ˈmen-təm

plural tegmenta teg-ˈmen-tə

: an anatomical covering : tegmen

especially : the part of the ventral midbrain above the substantia nigra formed of longitudinal white fibers with arched transverse fibers and gray matter

Examples of tegmentum in a Sentence

Recent Examples on the Web Hobson and McCarley proposed a complex physiological model in which the activation is driven by the giant cells of the pontine tegmentum. —

Neuroskeptic, Discover Magazine, 7 Apr. 2010

These examples are programmatically compiled from various online sources to illustrate current usage of the word 'tegmentum.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.

Word History

Etymology

New Latin, from Latin tegumentum, tegmentum, covering, from tegere

First Known Use

1832, in the meaning defined above

Time Traveler

The first known use of tegmentum was in 1832

See more words from the same year

Cite this Entry

Style

“Tegmentum.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tegmentum. Accessed 1 Oct. 2023.

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Medical Definition

tegmentum

noun

teg·men·tum teg-ˈment-əm

plural tegmenta -ˈment-ə

: an anatomical covering : tegmen

especially : the part of the ventral midbrain above the substantia nigra formed of longitudinal white fibers with arched transverse fibers and gray matter