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frontal bone
noun
, Anatomy.
- a broad membrane bone of the skull, forming the forehead and the upper portion of each orbit.
frontal bone
noun
- the bone forming the forehead and the upper parts of the orbits. It contains several air spaces
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Word History and Origins
Origin of frontal bone1
First recorded in 1735–45
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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
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