Word Study
sphenoid
CIDE DICTIONARY
sphenoid, a. [Gr. ; sfh`n a wedge + e'i^dos form: cf. F. sphénoïde.].
- Wedge-shaped; as, a sphenoid crystal. [1913 Webster]
- Of or pertaining to the sphenoid bone. [1913 Webster]
sphenoid, n.
- A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid. [1913 Webster]
- The sphenoid bone. [1913 Webster]
OXFORD DICTIONARY
sphenoid, adj. & n.
--adj.
1 wedge-shaped.
2 of or relating to the sphenoid bone.
--n. (in full sphenoid bone) a large compound bone forming the base of the cranium behind the eyes.
--adj.
1 wedge-shaped.
2 of or relating to the sphenoid bone.
--n. (in full sphenoid bone) a large compound bone forming the base of the cranium behind the eyes.
Derivative
sphenoidal adj.
Etymology
mod.L sphenoides f. Gk sphenoeides f. sphen wedge
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