frontal bone

noun

The bone which forms the front part of the skull and the upper part of the eye sockets and nasal cavity.

Similar
os frontaleforehead
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Meanings

nounfrontal bone (plural frontal bones)

plural frontal bones · alternative frontal

  1. anatomyThe bone which forms the front part of the skull and the upper part of the eye sockets and nasal cavity.

    The face which emerged was not reassuring. It was blunt and grey, the nose springing thick and flat from high on the frontal bone of the forehead, whilst his eyes were narrow slits of dark in a tight bandage of tissue.[…].

    1963, Margery Allingham, chapter 17, in The China Governess: A Mystery, London: Chatto & Windus, →OCLC
  2. anatomyEither of the pair of bones from which the frontal bone is formed by fusion in infancy.

Synonyms & antonyms

nounthe large cranial bone forming the front part of the cranium: includes the upper part of the orbits

Similar
os frontaleforehead
Broader
membrane bone
Also see
forehead

Synonym sets from Open English WordNet, CC BY 4.0.

Translations

Catalan os frontal, frontal
  • os frontalbone of the forehead
  • frontalbone of the forehead
Chinese Mandarin 額骨 /额骨
  • 額骨 /额骨 (égǔ)bone of the forehead
Czech čelní kost
  • čelní kostbone of the forehead
Esperanto fruntalo
  • fruntalobone of the forehead
Estonian otsmikuluu
  • otsmikuluubone of the forehead
Finnish otsaluu
  • otsaluubone of the forehead
French os frontal
  • os frontalbone of the forehead
German Stirnbein
  • Stirnbeinbone of the forehead
Hungarian homlokcsont
  • homlokcsontbone of the forehead
Korean 이마뼈
  • 이마뼈 (imappyeo)bone of the forehead
Polish kość czołowa
  • kość czołowabone of the forehead
Portuguese frontal
  • frontalbone of the forehead
Russian ло́бная кость
  • ло́бная кость (lóbnaja kostʹ)bone of the forehead
Slovak čelová kosť
  • čelová kosťbone of the forehead
Spanish hueso frontal, frontal
  • hueso frontalbone of the forehead
  • frontalbone of the forehead
Tagalog butong-noo
  • butong-noobone of the forehead
Vietnamese xương trán
  • xương tránbone of the forehead
Cite this entry
APA

frontal bone. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/frontal%20bone

MLA

“frontal bone.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/frontal%20bone. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “frontal bone,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/frontal%20bone.

Source: frontal bone on Wiktionary, CC BY-SA 4.0.