SINUSES
- A cavity within a bone or other tissue, esp. one in the bones of the face or skull connecting with the nasal cavities
- An irregular venous or lymphatic cavity, reservoir, or dilated vessel
- An infected tract leading from a deep-seated infection and discharging pus to the surface
- A rounded notch between two lobes on the margin of a leaf or petal
- Relating to or denoting the sinoatrial node of the heart or its function as a pacemaker
- SINUS, a cranial cavity [n]
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