petrosal

American  

[pi-troh-suhl] / pɪˈtroʊ səl /

adjective

1. petrous; hard or stony.

2. Anatomy. of or relating to the petrous portion of the temporal bone.

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petrosal British  

/ pɛˈtrəʊsəl /

adjective

1. anatomy of, relating to, or situated near the dense part of the temporal bone that surrounds the inner ear

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Other Word Forms

• subpetrosal adjective
• superpetrosal adjective

Etymology

Origin of petrosal

1735–45; < Latin petrōs ( us ) rocky ( petro- ¹, -ose ¹ ) + -al ¹

Example Sentences

These include the superior and inferior sagittal sinuses, straight sinus, cavernous sinuses, left and right sinuses, the petrosal sinuses, and the occipital sinuses.

From Textbooks • Jun. 19, 2013

Other cerebral veins and those from the eye socket flow into the cavernous sinus, which flows into the petrosal sinus and then into the internal jugular vein.

From Textbooks • Jun. 19, 2013

Anteriorly is the commencement of the Eustachian tube and in close proximity to the tympanum lies the carotid canal, and at one point also the superior petrosal sinus.

From A System of Practical Medicine by American Authors, Vol. I Volume 1: Pathology and General Diseases by Various

In its course each lateral sinus receives two petrosal sinuses, which pass from the cavernous sinus backwards along the upper and lower borders of the petrous part of the temporal bone.

From Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 4 "Bradford, William" to "Brequigny, Louis" by Various