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vermis

noun

ver·​mis ˈvər-mis How to pronounce vermis (audio)
: the constricted median lobe of the cerebellum that connects the two lateral lobes

Examples of vermis 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.
Horse manure containing alfalfa hay is an ideal medium for vermicomposting (vermis means worm in Latin), which yields worm castings (a euphemism for worm poop), the best soil amendment under the sun. — Joshua Siskin, Orange County Register, 30 Aug. 2024

Word History

Etymology

borrowed from New Latin, literally, "worm," after excrescentia vermiformis "vermiform growth," translating Galen's Greek phrase epíphysis skōlēkoeidḗs; so called by Galen from its resemblance to a grub growing out of wood — more at worm entry 1

First Known Use

1876, in the meaning defined above

Time Traveler
The first known use of vermis was in 1876

Rhymes for vermis

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Browse Nearby Words

vermiparous
vermis
vermivorous
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Cite this Entry

“Vermis.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/vermis. Accessed 19 Sep. 2026.

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Medical Definition

vermis

noun
ver·​mis ˈvər-mis How to pronounce vermis (audio)
plural vermes -ˌmēz How to pronounce vermis (audio)
1
: either of two parts of the median lobe of the cerebellum:
a
: one slightly prominent on the upper surface

called also superior vermis

b
: one on the lower surface sunk in the vallecula

called also inferior vermis

2
: the median lobe or part of the cerebellum

More from Merriam-Webster on vermis

Britannica.com: Encyclopedia article about vermis

Last Updated: - Updated example sentences
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