frontal bone

American  

noun

Anatomy.

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

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frontal bone British  

noun

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

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Etymology

Origin of frontal bone

First recorded in 1735–45

Example Sentences

See Examples For:

frontal bone

That young T. rex is represented by a skull bone -- the frontal bone -- with distinctive features that ally it with Tyrannosaurus, but which aren't seen in Nanotyrannus.

From Science Daily ● Jan. 2, 2024

Based on these techniques, the researchers concluded the human frontal bone and tibia were buried in Tam Pà Ling sometime between 86,000 and 68,000 years ago.

From Science Magazine ● Jun. 13, 2023

Then in 2017, in an even deeper layer, they discovered a forehead or frontal bone and a piece of shin bone, both identified from their characteristic bone shapes as belonging to our species.

From Science Magazine ● Jun. 13, 2023

This gene is responsible for the prominent frontal bone, bell-shaped rib cage, and dental differences seen in Neanderthals.

From Textbooks ● Jun. 9, 2022

Passing into the beautiful chapel the Class was shown the shrine containing the precious treasure, which consists of the supposed frontal bone, and the upper jaw of the saint.

From Zigzag Journeys in Europe Vacation Rambles in Historic Lands by Butterworth, Hezekiah