tentorium

[ ten-tawr-ee-uhm, -tohr- ]

noun

, plural ten·to·ri·a [ten-, tawr, -ee-, uh, -, tohr, -].

1. Anatomy. an extension of one of the membranes covering the cerebrum which, with the transverse fissure, separates the cerebrum from the cerebellum.
2. Zoology. (of an insect) the internal skeleton of the head.

Other Words From

• ten·tori·al adjective

Word History and Origins

Origin of tentorium¹

1655–65; < New Latin tentōrium, Latin: tent, equivalent to ten ( dere ) to extend, stretch + -tōrium -tory ²

Example Sentences

The Cerebellum, Little Brain, or After Brain occupies the inferior pair of occipital fossae, and lies below the plane of the tentorium cerebelli.

From Project Gutenberg

After locating the occipital knob, a horizontal line forward will give us the portion of the tentorium.

From Project Gutenberg

On introducing the finger, about 1� square inches of the occipital lobe were found to be pulped, and the finger could be swept across the tentorium.

From Project Gutenberg

Imagine," he cries, "a solid tentorium or canopy over London, what a mass of smoke would then stick to it!

From Project Gutenberg

The line 'b' indicates the plane of the tentorium, which separates the cerebrum from the cerebellum; 'd', the axis of the occipital outlet of the skull.

From Project Gutenberg