| sinus | a wide channel containing blood |
|---|---|
| sinus | any of various air-filled cavities especially in the bones of the skull |
| sinus | an abnormal passage leading from a suppurating cavity to the body surface |
| sinus | either of a pair of large venous sinuses in the cranial cavity |
| sinus | a short sinus receiving most of the veins of the heart |
| sinus | a sinus of the meatuses of the nasal cavity (behind the bridge of the nose) |
| sinus | a headache resulting from congestion or infection in the paranasal sinuses |
| sinus | 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 lining of the nasal cavities |
| sinus | an unpaired sinus of the dura mater |
| sinus | an S-shaped dural sinus on the temporal and occipital bones |
| sinus | a paired dural sinus |
| sinus | a circular canal in the eye that drains aqueous humor from the anterior chamber of the eye into the anterior ciliary veins |