SINUS

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 Dictionary entry overview: What does sinus mean? 

• SINUS (noun)
  The noun SINUS has 3 senses:

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

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

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

  Familiarity information: SINUS used as a noun is uncommon.

 Dictionary entry details 

• SINUS (noun)

Sense 1

Meaning:

An abnormal passage leading from a suppurating cavity to the body surface

Classified under:

Nouns denoting body parts

Synonyms:

fistula; sinus

Hypernyms ("sinus" is a kind of...):

passage; passageway (a path or channel or duct through or along which something may pass)

Sense 2

Meaning:

Any of various air-filled cavities especially in the bones of the skull

Classified under:

Nouns denoting body parts

Hypernyms ("sinus" is a kind of...):

bodily cavity; cavity; cavum ((anatomy) a natural hollow or sinus within the body)

Hyponyms (each of the following is a kind of "sinus"):

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)

Sense 3

Meaning:

A wide channel containing blood; does not have the coating of an ordinary blood vessel

Classified under:

Nouns denoting body parts

Synonyms:

sinus; venous sinus

Hypernyms ("sinus" is a kind of...):

canal; channel; duct; epithelial duct (a bodily passage or tube lined with epithelial cells and conveying a secretion or other substance)

Hyponyms (each of the following is a kind of "sinus"):

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)

 Context examples 

A non-metastasizing neoplasm that arises from the sphenoid sinus.

(Benign Sphenoid Sinus Neoplasm, NCI Thesaurus)

A non-metastasizing neoplasm that arises from the pyriform sinus.

(Benign Pyriform Fossa Neoplasm, NCI Thesaurus)

A natural hollow or sinus within the body.

(Body Cavity, NCI Thesaurus)

An electrocardiographic finding of an ectopic impulse originating in the atria and not specifically in the sinus node.

(Atrial Premature Complex by ECG Finding, NCI Thesaurus/CDISC)

The most common type of paranasal sinus and nasal cavity cancer is squamous cell carcinoma (cancer that begins in flat cells lining these tissues and cavities).

(Nasal Cavity and Paranasal Sinus Carcinoma, NCI Dictionary)

Inflammation of the ethmoid sinus that typically lasts beyond eight weeks.

(Chronic Ethmoidal Sinusitis, NCI Thesaurus)

It is found in the marginal zones of lymph nodes adjacent to the subcapsular and intermediary sinuses.

(Monocytoid B-Lymphocyte, NCI Thesaurus)

A cardiac rhythm characterized by a regular sinus/atrial rhythm with intermittent nonconducted P waves.

(Mobitz II, NCI Thesaurus)

A carcinoma arising from the nasal cavity or paranasal sinuses.

(Nasal Cavity and Paranasal Sinus Carcinoma, NCI Thesaurus)

A vein originating at the apex of the heart that ascends along the posterior interventricular sulcus and drains into the coronary sinus.

(Middle Cardiac Vein, NCI Thesaurus)