1. sphenoid - Noun
2. sphenoid - Adjective
Wedge-shaped; as, a sphenoid crystal.
Of or pertaining to the sphenoid bone.
A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid.
The sphenoid bone.
Source: Webster's dictionaryTheir palate differs from other ratites in that the sphenoid and palatal bones are unconnected. Source: Internet
The furcula and coracoid are degenerate, and their palatal bones and sphenoid bones touch each other. Source: Internet
Tumours of the sphenoid and frontal sinuses are extremely rare. Source: Internet