1. sinus

noun. (ˈsaɪnəs) An abnormal passage leading from a suppurating cavity to the body surface.
Synonyms
fistula passage passageway
Etymology
sinus (English)
sinus (Latin)

2. sinus

noun. (ˈsaɪnəs) Any of various air-filled cavities especially in the bones of the skull.
Synonyms
sinus ethmoidales bodily cavity ethmoidal sinus cavity sinus paranasales ethmoid sinus cavum nasal sinus maxillary sinus frontal sinus paranasal sinus
Etymology
sinus (English)
sinus (Latin)

3. sinus

noun. (ˈsaɪnəs) A wide channel containing blood; does not have the coating of an ordinary blood vessel.
Synonyms
venous sinus canal cavernous sinus sinus rectus sinus transversus sigmoid sinus transverse sinus sinus coronarius tentorial sinus coronary sinus channel duct epithelial duct sinus cavernosus straight sinus sinus sigmoideus
Antonyms
take away
Etymology
sinus (English)
sinus (Latin)
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