frontal bone

noun

, Anatomy.

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

frontal bone

noun

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

Word History and Origins

Origin of frontal bone¹

First recorded in 1735–45

Example Sentences

The anterior part of the brain-case (frontal bone) also forms an important feature of the face.

From Project Gutenberg

But if the thin post-frontal bone were absorbed, Pterodactylus would resemble birds.

From Project Gutenberg

Since the Revolution, however, the skull has been reduced to the frontal bone and upper jaw.

From Project Gutenberg

Another character is the absence of a hollow chamber, or sinus, within the frontal bone of the forehead.

From Project Gutenberg

The faithful animal had seized the hot steel with his teeth, and drew it from the frontal bone of Mr. Templeton's head.

From Project Gutenberg