sinus meaning

sinus as a noun

1. an abnormal passage leading from a suppurating cavity to the body surface

   Synonyms: fistula

   Type of: passage

2. any of various air-filled cavities especially in the bones of the skull

   Type of: cavity

   Kinds: ethmoid sinus, frontal sinus, maxillary sinus, paranasal sinus

3. a wide channel containing blood; does not have the coating of an ordinary blood vessel

   Synonyms: venous sinus

   Type of: duct

   Kinds: cavernous sinus, coronary sinus, sigmoid sinus, straight sinus, transverse sinus

How to pronounce sinus

sinus is pronounced /ˈsaɪnəs/ in British English and /ˈsaɪnəs/ in American English. It has 2 syllables, with the stress on the first syllable.

Words that rhyme with sinus

• dryness
• highness
• minus
• shyness
• slyness