sinus
IPA: sˈaɪnʌs
noun
- (anatomy, zootomy) A pouch or cavity in a bone or other tissue, especially one in the bones of the face or skull connecting with the nasal cavities (the paranasal sinus).
- (anatomy) An irregular venous or lymphatic cavity, reservoir, or dilated vessel.
- (physiology, attributive) Relating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.
- (pathology) An abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.
- (botany) A rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.
- (geography) A bay of the sea; a recess in the shore.
- (trigonometry) Synonym of sine.
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Examples of "sinus" in Sentences
- He went to the dentist to check his sinus.
- The sinus is caused in the embryonic stage of development.
- The area of mare to the southwest is named the Sinus Lunicus.
- They freeze the damaged muscle which is near the coronary sinus.
- In some cases, it is absent and the root is in fact in the sinus.
- The flow within the draining vein or venous sinus is anterograde.
- The preferred treatment is endoscopic surgery to deflate the sinus.
- KNOX: That, he says, will be the next big advance in sinus treatment.
- In the males, the sinus tubercle gives rise to the seminal colliculus.
- Expansion of the cyst causes erosion of the floor of the maxillary sinus.
- The cause of sinus infection is bacteria in the lining cells of the sinuses.
- One odd thing resulted from the surgery ... now his heart is back in sinus (sp?) rhythm.
- If the sinus is removed, keeping pressure off of the incision is imperative to good wound healing.
- The sinus node generates the electric impulse that starts your heartbeat, so this is known as a sinus rhythm.
- The area innervated by the depressor nerves and the carotid sinus is therefore part of a common system, sometimes called the bridles of the blood pressure.
- Concrete filled steel profiles follow in sinus waves from the ground level to the top of the tower, creating a distinctive identity and complementing the tower design.
- WATERS: The first question I had, and I am sure the Fords are asking the same question too, the president was at Hahnemann Hospital last night complaining of what he described as a sinus infection and wax buildup in the ear.
- The coalescence of the neural folds occurs first in the region of the hind-brain, and from there extends forward and backward; toward the end of the third week the front opening (anterior neuropore) of the tube finally closes at the anterior end of the future brain, and forms a recess which is in contact, for a time, with the overlying ectoderm; the hinder part of the neural groove presents for a time a rhomboidal shape, and to this expanded portion the term sinus rhomboidalis has been applied (Fig. 18).