Definiciones
1.NounA 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).
2.NounAn irregular venous or lymphatic cavity, reservoir, or dilated vessel.
3.NounRelating to or denoting the sinoatrial node of the heart or its function of regulating the heartbeat.
4.NounAn abnormal cavity or passage such as a fistula, leading from a deep-seated infection and discharging pus to the surface.
5.NounA rounded notch or depression between two lobes or teeth in the margin of a leaf or petal.
6.NounA bay of the sea; a recess in the shore.
7.NounSynonym of sine.