Definition of "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. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "On this line Schwalbe traced the frontal angle (that between the tangent of the frontal bone at the glabella and the glabella-inion line), the bregman angle"
• "The nasal bones had all but disappeared, and the exposed frontal bone bore evidence of several shallow, dishlike compression fractures."
• "The mortars were the natural bowl shapes of certain bones, such as the frontal bone of a deer, or pecked out of granite or basalt, just as the stone lamps were."