| 释义 |
WordReference Random House Learner's Dictionary of American English © 2024si•nus /ˈsaɪnəs/USA pronunciation n. [countable], pl. -nus•es. - Anatomyone of the hollow cavities in the skull connecting with the nose:Her sinuses are causing her pain; a sinus headache.
WordReference Random House Unabridged Dictionary of American English © 2024si•nus (sī′nəs),USA pronunciation n., pl. -nus•es. - a curve;
bend. - a curving part or recess.
- Anatomy
- any of various cavities, recesses, or passages, as a hollow in a bone, or a reservoir or channel for venous blood.
- one of the hollow cavities in the skull connecting with the nasal cavities.
- an expanded area in a canal or tube.
- Pathologya narrow passage leading to an abscess or the like.
- Botanya small, rounded depression between two projecting lobes, as of a leaf.
- Latin sinus (stem sinu-) bent or curved surface, curve, fold
- 1590–1600
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