inferior petrosal sinus

noun

The larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.

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Meanings

nouninferior petrosal sinus (plural inferior petrosal sinuses)

plural inferior petrosal sinuses

  1. anatomyThe larger of the two petrosal sinuses that is situated inferiorly in a sulcus on each side formed by the junction of the petrous portion of the temporal bone and the basilar portion of the occipital bone and that extends from the posterior inferior end of the cavernous sinus through the jugular foramen to join the internal jugular vein of the same side.

Translations

Chinese Mandarin 岩下竇 /岩下窦, 下岩竇 /下岩窦
  • 岩下竇 /岩下窦 (yánxiàdòu)sinus between the temporal and occipital bones
  • 下岩竇 /下岩窦 (xià yán dòu)sinus between the temporal and occipital bones
Cite this entry
APA

inferior petrosal sinus. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/inferior%20petrosal%20sinus

MLA

“inferior petrosal sinus.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/inferior%20petrosal%20sinus. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “inferior petrosal sinus,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/inferior%20petrosal%20sinus.

Source: inferior petrosal sinus on Wiktionary, CC BY-SA 4.0.