noun
the large butterfly-shaped compound bone at the base of the skull, containing a protective depression for the pituitary gland
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Words nearby sphenoid bone
sphenogram,
sphenography,
sphenoid,
sphenoidal sinus,
sphenoidal spine,
sphenoid bone,
sphenoid crest,
sphenoiditis,
sphenoidotomy,
sphenopalatine artery,
sphenopalatine foramen Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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How to use sphenoid bone in a sentence
Not long after I was finally diagnosed, my doctor ordered a bone density scan.
Later studies showed that only gaining weight and the return of natural menstruation help improve bone density.
My doctor put me on oral contraceptives to induce a period, figuring it would help build bone.
This leaves people with a history of anorexia and reduced bone density like me at high risk for fractures.
An x-ray two hours later confirms my hunch: my tibia (the big bone behind the shin) is snapped clean in two.
I saw this girl, eight or nine years old, all benumbed and nothing but skin and bone.
Large mononuclear leukocytes probably originate in the bone-marrow or spleen.
That we will, and you never need want, Mark, for I've many a fine bone buried away against old age and rainy weather.
Myelocytes are the bone-marrow cells from which the corresponding granular leukocytes are developed.
Polymorphonuclear leukocytes are formed in the bone-marrow from neutrophilic myelocytes.
Medical definitions for sphenoid bone
n.
A compound bone with winglike processes, situated at the base of the skull.
The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.