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sphenoid bone

British  

noun

  1. the large butterfly-shaped compound bone at the base of the skull, containing a protective depression for the pituitary gland

"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

Example Sentences

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The middle cranial fossa is divided at the midline by the upward bony prominence of the sella turcica, a part of the sphenoid bone.

From Textbooks • Jun. 19, 2013

On the inferior aspect of the skull, each half of the sphenoid bone forms two thin, vertically oriented bony plates.

From Textbooks • Jun. 19, 2013

It extends from the frontal bone anteriorly to the lesser wing of the sphenoid bone posteriorly.

From Textbooks • Jun. 19, 2013

The greater wings of the sphenoid bone extend laterally to either side away from the sella turcica, where they form the anterior floor of the middle cranial fossa.

From Textbooks • Jun. 19, 2013

The sphenoid bone is in front of the occipital, forming a part of the base of the skull.

From A Practical Physiology by Blaisdell, Albert F.