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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 pituitary, seated in the sella turcica of the sphenoid bone, is directly inferior to the optic chiasm.

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 most posterior is the sphenoid sinus, located in the body of the sphenoid bone, under the sella turcica.

From Textbooks • Jun. 19, 2013

Vesalius gives a good account of the sphenoid bone, with its large and small wings and its pterygoid processes; and he accurately describes the vestibule in the interior of the temporal bone.

From Fathers of Biology by McRae, Charles