Sphenoid Sinus

**Semantic type:** Body Space or Junction

**Definition:** Either of the paired paranasal sinuses, located in the anterior part of the body of the sphenoid bone and communicating with the superior meatus of the nasal cavity on the same side.

**Synonyms:** - SPHENOID SINUS - Sinus, Sphenoid - Sphenoid sinus - Sphenoid sinus structure (body structure) - sphenoid sinus