sinus

Type of:: passage, passageway
a path or channel or duct through or along which something may pass

Types:: show 4 types...; hide 4 types...; ethmoid sinus, ethmoidal sinus, sinus ethmoidales
a sinus of the meatuses of the nasal cavity (behind the bridge of the nose); frontal sinus
one of a pair of cavities in the frontal bone; maxillary sinus
one of a pair of sinuses forming a cavity in the maxilla; nasal sinus, paranasal sinus, sinus paranasales
any of the paired sinuses in the bones of the face adjacent to the nasal cavity that are lined with mucous membrane that is continuous with the lining of the nasal cavities

Type of:: bodily cavity, cavity, cavum
(anatomy) a natural hollow or sinus within the body

Types:: show 5 types...; hide 5 types...; cavernous sinus, sinus cavernosus
either of a pair of large venous sinuses in the cranial cavity; coronary sinus, sinus coronarius
a short sinus receiving most of the veins of the heart; empties into the right atrium; sigmoid sinus, sinus sigmoideus
an S-shaped dural sinus on the temporal and occipital bones; sinus rectus, straight sinus, tentorial sinus
an unpaired sinus of the dura mater; sinus transversus, transverse sinus
a paired dural sinus; terminates in the sigmoid sinus

Type of:: canal, channel, duct, epithelial duct
a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance

DEFINITIONS OF: sinus