frontal bone

frontal bone

noun Anatomy.
a broad membrane bone of the skull, forming the forehead and the upper portion of each orbit.


Origin:
1735–45
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2012.
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Frontal bone is always a great word to know.
So is epidermis. Does it mean:
the outer, nonvascular, nonsensitive layer of the skin, covering the true skin or corium
either of two flat, triangular bones, each forming the back part of a shoulder; a shoulder blade
Collins
World English Dictionary
frontal bone
 
n
the bone forming the forehead and the upper parts of the orbits. It contains several air spaces

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009
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American Heritage
Medical Dictionary

frontal bone n.
A cranial bone consisting of a vertical portion corresponding to the forehead and a horizontal portion that forms the roofs of the orbital and nasal cavities.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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