metosteonn.

Brit.

/mᵻˈtɒstɪən/, U.S.

/məˈtɑstiən/

Inflections: Plural metostea.

Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek ὀστέον.

Etymology: < meta- prefix (compare sense 3 at that entry) + ancient Greek ὀστέον bone (see osteo- comb. form).

Zoology (chiefly Ornithology). Now rare. Perhaps Obsolete.

An accessory centre of ossification of the sternum, esp. that of its posterior lateral process in some birds.In quot. 1930, used for the base of the process itself.

ΘΚΠ

the world > animals > birds > bones > [noun] > sternum > part of

keel1767

metosteon1868

pleurosteon1868

pro-osteon1868

manubrium1890

1868 W. K. Parker Monogr. Struct. & Devel. Shoulder-girdle & Sternum Vertebrata 144 Behind each ‘pleurosteon’ there is, in the Gallinaceæ, and a few other types, in the Crows, for instance, another bony centre, the ‘metosteon’.

1885 Proc. Zool. Soc. 687/2 The Metosteon corresponds with the partial ossification of the posterior-lateral processes in Stellio and Iguana.

1896 A. Newton et al. Dict. Birds: Pt. IV iv. 910 In some Birds metostea are the centres whence the posterior lateral processes ossify.

1930 H. G. Newth Marshall & Hurst's Junior Course Pract. Zool. (ed. 11) xv. 411 Each metosteon divides, close to its origin, into two large flattened processes, the external and middle xiphoid processes.

This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022).

单词	metosteon
释义	metosteonn. Brit. /mᵻˈtɒstɪən/, U.S. /məˈtɑstiən/ Inflections: Plural metostea. Origin: A borrowing from Greek, combined with an English element. Etymons: meta- prefix, Greek ὀστέον. Etymology: < meta- prefix (compare sense 3 at that entry) + ancient Greek ὀστέον bone (see osteo- comb. form). Zoology (chiefly Ornithology). Now rare. Perhaps Obsolete. An accessory centre of ossification of the sternum, esp. that of its posterior lateral process in some birds.In quot. 1930, used for the base of the process itself. ΘΚΠ the world > animals > birds > bones > [noun] > sternum > part of keel1767 metosteon1868 pleurosteon1868 pro-osteon1868 manubrium1890 1868 W. K. Parker Monogr. Struct. & Devel. Shoulder-girdle & Sternum Vertebrata 144 Behind each ‘pleurosteon’ there is, in the Gallinaceæ, and a few other types, in the Crows, for instance, another bony centre, the ‘metosteon’. 1885 Proc. Zool. Soc. 687/2 The Metosteon corresponds with the partial ossification of the posterior-lateral processes in Stellio and Iguana. 1896 A. Newton et al. Dict. Birds: Pt. IV iv. 910 In some Birds metostea are the centres whence the posterior lateral processes ossify. 1930 H. G. Newth Marshall & Hurst's Junior Course Pract. Zool. (ed. 11) xv. 411 Each metosteon divides, close to its origin, into two large flattened processes, the external and middle xiphoid processes. This entry has been updated (OED Third Edition, December 2001; most recently modified version published online March 2022). < n.1868
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