quadrate bone

noun

A bone between the base of the lower jaw and the skull in most vertebrates other than mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals its equivalent is the incus.

Similar
os quadratumquadratequadratum
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Meanings

nounquadrate bone (plural quadrate bones)

plural quadrate bones

  1. anatomyA bone between the base of the lower jaw and the skull in most vertebrates other than mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals its equivalent is the incus.

    Synonyms: os quadratum, quadrate, quadratum

Synonyms & antonyms

nounA bone between the base of the lower jaw and the skull in most vertebrates other than mammals. In reptiles and birds it articulates the lower jaw with the skull; in mammals its equivalent is the incus.

Similar
os quadratumquadratequadratum
Cite this entry
APA

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

MLA

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

Chicago

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

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