frontal bone
noun
: a bone that forms the forehead and roofs over most of the orbits and nasal cavity and that at birth consists of two halves separated by a suture
Example Sentences
Recent Examples on the Web Saget had several blunt force injuries of the head, according to the medical examiner's autopsy report obtained by ABC News, including a fracture at the base of his skull and fractures involving the frontal bone. 
Meredith Deliso, ABC News, 15 Feb. 2022 Further evidence for cladogenesis comes from a 3.9m years old frontal bone (part of the forehead) from Ethiopia, discovered in 1981. Hester Hanegraef, Quartz Africa, 7 Sep. 2019 The frontal bone of its skull had a long anterior platform for the nasofrontal sutural surface, meaning the dinosaur had what some might call a duck bill. Kendall Trammell, CNN, 5 Sep. 2019 CT scan images of the skull roof (frontal bone in pink, parietal in green) a chicken, the birdlike dinosaur Zanabazar, the primitive dinosaur Herrerasaurus, and Proterosuchus. Matt Blitz, Popular Mechanics, 20 June 2018 Enshrined in the temple are all sorts of relics: a collar and frontal bone of the Buddha, the Celonese Tooth of Kandy, and an emerald Buddha from China. Antonia Neubauer, Town & Country, 5 Oct. 2016 The procedure would have involved temporary surgical removal of part of the frontal bone of the skull and excision of the bone tumor to close the leak that was sending air into the brain. Mark Lieber, CNN, 13 Mar. 2018 See More
Meredith Deliso, ABC News, 15 Feb. 2022 Further evidence for cladogenesis comes from a 3.9m years old frontal bone (part of the forehead) from Ethiopia, discovered in 1981. Hester Hanegraef, Quartz Africa, 7 Sep. 2019 The frontal bone of its skull had a long anterior platform for the nasofrontal sutural surface, meaning the dinosaur had what some might call a duck bill. Kendall Trammell, CNN, 5 Sep. 2019 CT scan images of the skull roof (frontal bone in pink, parietal in green) a chicken, the birdlike dinosaur Zanabazar, the primitive dinosaur Herrerasaurus, and Proterosuchus. Matt Blitz, Popular Mechanics, 20 June 2018 Enshrined in the temple are all sorts of relics: a collar and frontal bone of the Buddha, the Celonese Tooth of Kandy, and an emerald Buddha from China. Antonia Neubauer, Town & Country, 5 Oct. 2016 The procedure would have involved temporary surgical removal of part of the frontal bone of the skull and excision of the bone tumor to close the leak that was sending air into the brain. Mark Lieber, CNN, 13 Mar. 2018 See More Word History
First Known Use
1741, in the meaning defined above
Medical Definition
frontal bone
noun
: a bone that forms the forehead and roofs over most of the orbits and nasal cavity and that at birth consists of two halves separated by a suture
also : either of the two halves especially in a vertebrate in which they do not unite to form a single bone