frontal bone

noun Anatomy.

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

Nearby words

  1. frontage road,
  2. frontal,
  3. frontal area,
  4. frontal artery,
  5. frontal axis,
  6. frontal cortex,
  7. frontal crest,
  8. frontal cyclone,
  9. frontal groove,
  10. frontal gyrus

Origin of frontal bone

First recorded in 1735–45 Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

British Dictionary definitions for frontal bone

frontal bone


the bone forming the forehead and the upper parts of the orbits. It contains several air spaces
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

Medicine definitions for frontal bone

frontal bone


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.