adjective Also sphe·noi·dal.
being in the shape of a wedge; wedge-shaped.
Anatomy. of or relating to the compound bone of the base of the skull, at the roof of the pharynx.
Anatomy. the sphenoid bone.
Origin of sphenoid
1725–35;Related formspost·sphe·noid, adjectivepre·sphe·noid, adjectivesub·sphe·noid, adjectivesub·sphe·noi·dal, adjectivesu·per·sphe·noid, adjectivesu·per·sphe·noi·dal, adjective
< New Latin sphēnoīdēs
< Greek sphēnoeidḗs.
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sphenoid
Historical Examples of sphenoid
The main body of the sphenoid is at the base of the cranium.
Simple brachycephaly is due to early synostosis of the nasal and sphenoid.
The bones that extend backward to the sphenoid are not easily identified.
Under these conditions we have witnessed fractures of the parietal, of the frontal, and of the sphenoid bones.
The pituitary body itself is lodged in a cavity of the sphenoid bone called the pituitary fossa.
British Dictionary definitions for sphenoid
adjective Also: sphenoidal
of or relating to the sphenoid bone
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Related formssphe•noi′dal (-noid′l) adj.
Of or relating to the sphenoid bone.
The American Heritage® Stedman's Medical Dictionary
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