tiles


Note:  Do not rely on this information. It is very old.

Sinus

Sinus. The term "sinus" is sometimes applied to the cavities which are met with in bones, as, for example, the frontal sinuses; the expression "venous sinus" is used to denote the dilated channels which occur in certain situations, particularly in the skull, and which serve for the transmission of venous blood. [FISTULA.]