Definition of sinus Sinus

/sajˈnʌs/ - [saynus] - si•nus

We found 15 definitions of sinus from 5 different sources.

What does sinus mean?

Noun Plural: sini
sinus - any of various air-filled cavities especially in the bones of the skull
		bodily cavity, cavum, cavity (anatomy) a natural hollow or sinus within the body
		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
sinus - a wide channel containing blood; does not have the coating of an ordinary blood vessel
		venous sinus
		epithelial duct, canal, duct, channel long and narrow strip of water made for boats or for irrigation
		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 - an abnormal passage leading from a suppurating cavity to the body surface
		fistula
		passageway, passage a passage between rooms or between buildings

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sinus (Noun)
A pouch or cavity in any organ or tissue, especially the paranasal sinus .
sinus (Noun)
An abnormal cavity or passage such as a fistula, caused by the destruction of tissue.

sinus (pl. )
of Sinus
sinus (n.)
An opening; a hollow; a bending.
sinus (n.)
A bay of the sea; a recess in the shore.
sinus (n.)
A cavity; a depression.
sinus (n.)
A cavity in a bone or other part, either closed or with a narrow opening.
sinus (n.)
A dilated vessel or canal.
sinus (n.)
A narrow, elongated cavity, in which pus is collected; an elongated abscess with only a small orifice.
sinus (n.)
A depression between adjoining lobes.

sinus
sī′nus, n. a bending: a fold: an opening: a bay of the sea: a recess on the shore: (anat.) a cavity or hollow of bone or other tissue, one of the air-cavities contained in the interior of certain bones: a channel for transmitting venous blood: a narrow opening leading to an abscess, &c.—n. Sī′nusoid, the curve of sines in which the abscisses are proportional to an angle, and the ordinates to its sine.—adj. Sinusoi′dal.—adv. Sinusoi′dally. [L. sinus, a curve.]

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sinus in sign language