vermis

[ vur-mis ]

/ ˈvɜr mɪs /

the median lobe or division of the cerebellum.

Origin of vermis

1885–90; < New Latin; Latin: worm; so called from its shape

Like the cerebrum, the cerebellum has two hemispheres, separated by a structure called the vermis.

Early Brain Injury Might Be the Root of Autism |Russell Saunders |September 7, 2014 |DAILY BEAST
I have never found the Struthiolaria vermis except cast up on ocean beaches, and it is comparatively rare.

Beautiful Shells of New Zealand |E. G. B. Moss
The Latin name for the same discomfort was verminatio, from vermis, a worm.

The Romance of Words (4th ed.) |Ernest Weekley
It consists of two hemispheres or lateral lobes, and of a median or central lobe, which in human anatomy is called the vermis.

Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 |Various

The Bishop hung his head and replied, "Vermis sum—I am a worm."

Les Misrables |Victor Hugo
The vermis and large barnacles abound, which are so destructive to shipping without copper bottoms.

Observations Upon The Windward Coast Of Africa |Joseph Corry

vermis

/ (ˈvɜːmɪs) /

anatomy the middle lobe connecting the two halves of the cerebellum

C19: via New Latin from Latin: worm

vermis

[ vûr′mĭs ]

The narrow middle zone occurring between the two hemispheres of the cerebellum.