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sphenoid |
2 definitions found From Webster's Revised Unabridged Dictionary (1913) [web1913]: Sphenoid \Sphe"noid\, n. 1. (Crystallog.) A wedge-shaped crystal bounded by four equal isosceles triangles. It is the hemihedral form of a square pyramid. 2. (Anat.) The sphenoid bone. From Webster's Revised Unabridged Dictionary (1913) [web1913]: Sphenoid \Sphe"noid\, a. [Gr. ???; sfh`n a wedge + e'i^dos form: cf F. sph['e]no["i]de.] 1. Wedge-shaped; as a sphenoid crystal. 2. (Anat.) Of or pertaining to the sphenoid bone. {Sphenoid bone} (Anat.), an irregularly shaped bone in front of the occipital in the base of the skull of the higher vertebrates. It is composed of several fetal bones which become united the adult. See {Alisphenoid}, {Basisphenoid}, {Orbitosphenoid}, {Presphenoid}.
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