Definition: 'Sigmoid Sinus'
sigmoid sinusType: Term
1. the S-shaped dural venous sinus lying deep to the mastoid process of the temporal bone and immediately posterior to the petrous temporal bone; it is continuous with the transverse sinus and empties into the internal jugular vein as it passes through the jugular foramen.
Synonyms: sinus sigmoideus
The definition information for sigmoid sinus is provided by Stedman's. You can search our medical dictionary here.