TENTORIUM
tentorium
(noun) (anatomy) a fold of dura mater that covers the cerebellum and supports the occipital lobes of the cerebrum
Source: WordNet® 3.1
Etymology
Noun
tentorium (plural tentoria or tentoriums)
The framework of internal supports (a false endoskeleton) within an arthropod head, formed by ingrowths of the exoskeleton called apophyses.
(anatomy) The tentorium cerebelli, an extension of the dura mater that separates the cerebellum from the inferior portion of the occipital lobes.
Source: Wiktionary
Ten*to"ri*um, n. Etym: [L., a tent.] (Anat.)
Definition: A fold of the dura mater which separates the cerebellum from
the cerebrum and often incloses a process or plate of the skull
called the bony tentorium.
Source: Webster’s Unabridged Dictionary 1913 Edition