SINCE 1828
dictionary
thesaurus
view recents

cavernous sinus

noun
Save Word

Medical Definition of cavernous sinus

: either of a pair of large venous sinuses situated in a groove at the side of the body of the sphenoid bone in the cranial cavity and opening behind into the petrosal sinuses

Learn More about cavernous sinus

Cite this Entry

“Cavernous sinus.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/cavernous%20sinus. Accessed 4 Mar. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

Comments on cavernous sinus

What made you want to look up cavernous sinus? Please tell us where you read or heard it (including the quote, if possible).

Show Comments  Hide Comments 

WORD OF THE DAY

smorgasbord

Listen to the pronunciation of smorgasbord

See Definitions and Examples »

Test Your Vocabulary

February 2021 Words of the Day Quiz

  • squirrel in winter
  • Which is a synonym of perdure?
How Strong Is Your Vocabulary?

Test your vocabulary with our 10-question quiz!

TAKE THE QUIZ
Typeshift

Anagram puzzles meet word search.

TAKE THE QUIZ
Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!

Words at Play
Ask the Editors
Word Games