sinus plural
si·nus
The plural form of sinus is sinuses
S sDefinitions
- noun plural sinus a curve; bend. 1
- noun plural sinus a curving part or recess. 1
- noun plural sinus 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. 1
- noun plural sinus Pathology. a narrow passage leading to an abscess or the like. 1
- noun plural sinus Botany. a small, rounded depression between two projecting lobes, as of a leaf. 1