pessulusn.

Brit.

/ˈpɛsjᵿləs/, U.S.

/ˈpɛsjələs/

Origin: A borrowing from Latin. Etymon: Latin pessulus.

Etymology: < classical Latin pessulus a bolt (compare quot. 1805 at sense 1) < ancient Greek πάσσαλος (Attic πάτταλος ): see passalid adj. and n.

Zoology.

†1. In certain rodents: a small bone in the ear which passes through the fork of the stapes and holds it in place. Obsolete. rare.

ΘΚΠ

the world > life > the body > structural parts > bone or bones > types of bones > [noun] > according to shape

seed-bone1615

pessulus1805

sesamoid1854

colonnette1872

scale1875

semilunar1893

1805 A. Carlisle in Philos. Trans. (Royal Soc.) 95 204 The stapes in these animals [sc. guinea-pig and marmot] is formed with slender crura, constituting a rounded arch, through which an osseous bolt passes, so as to rivet it to its situation. This bolt I have named pessulus.

1882 Philos. Trans. (Royal Soc.) 173 914 He [sc. Carlisle] considered that the function of the pessulus was to prevent the stapes from falling into the vestibule.

2. In some birds: a cartilaginous or bony bar at the junction of the bronchi, forming part of the syrinx.

ΘΚΠ

the world > animals > birds > parts of or bird defined by > [noun] > neck or throat > voice organ or part of

syrinx1872

pessulus1890

song box1892

1890 Cent. Dict. 4422/3 (caption) Last entire tracheal ring, viewed from below, crossed by the pessulus.

1930 H. G. Newth Marshall & Hurst's Junior Course Pract. Zool. (ed. 11) xvi. 456 The pessulus is a slender bar of cartilage running across the tympanum [of the syrinx]..from the dorsal to the ventral surface.

1997 Proc. National Acad. Sci. U.S.A. 94 14790 (caption) The absence of an ossified pessulus in crows probably facilitates this deformation.

This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022).

单词	pessulus
释义	pessulusn. Brit. /ˈpɛsjᵿləs/, U.S. /ˈpɛsjələs/ Origin: A borrowing from Latin. Etymon: Latin pessulus. Etymology: < classical Latin pessulus a bolt (compare quot. 1805 at sense 1) < ancient Greek πάσσαλος (Attic πάτταλος ): see passalid adj. and n. Zoology. †1. In certain rodents: a small bone in the ear which passes through the fork of the stapes and holds it in place. Obsolete. rare. ΘΚΠ the world > life > the body > structural parts > bone or bones > types of bones > [noun] > according to shape seed-bone1615 pessulus1805 sesamoid1854 colonnette1872 scale1875 semilunar1893 1805 A. Carlisle in Philos. Trans. (Royal Soc.) 95 204 The stapes in these animals [sc. guinea-pig and marmot] is formed with slender crura, constituting a rounded arch, through which an osseous bolt passes, so as to rivet it to its situation. This bolt I have named pessulus. 1882 Philos. Trans. (Royal Soc.) 173 914 He [sc. Carlisle] considered that the function of the pessulus was to prevent the stapes from falling into the vestibule. 2. In some birds: a cartilaginous or bony bar at the junction of the bronchi, forming part of the syrinx. ΘΚΠ the world > animals > birds > parts of or bird defined by > [noun] > neck or throat > voice organ or part of syrinx1872 pessulus1890 song box1892 1890 Cent. Dict. 4422/3 (caption) Last entire tracheal ring, viewed from below, crossed by the pessulus. 1930 H. G. Newth Marshall & Hurst's Junior Course Pract. Zool. (ed. 11) xvi. 456 The pessulus is a slender bar of cartilage running across the tympanum [of the syrinx]..from the dorsal to the ventral surface. 1997 Proc. National Acad. Sci. U.S.A. 94 14790 (caption) The absence of an ossified pessulus in crows probably facilitates this deformation. This entry has been updated (OED Third Edition, December 2005; most recently modified version published online March 2022). < n.1805
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