† pleurosteonn.

Inflections: Plural pleurostea.

Origin: A borrowing from Greek, combined with an English element. Etymons: pleuro- comb. form, Greek ὀστέον.

Etymology: < pleuro- comb. form + ancient Greek ὀστέον bone (see osteo- comb. form). Compare pleurosteal adj. N.E.D. (1907) indicates the stress as pleuˈrosteon.

Ornithology. Obsolete.

Either of the anterior lateral parts of the sternum in birds, with which the ribs articulate; either of the separate centres of ossification from which these parts develop.

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’.

1875 Encycl. Brit. III. 720/1 In Turnix there are two more centres, mesiad of the pleurostea, these are the coracostea.

1892 Philos. Trans. 1891 (Royal Soc.) B. 182 88 The osteites of the costal sternum (pleurostea) have appeared.

1895 New Sydenham Soc. Lexicon Pleurosteon... In young birds this can be seen to be a separate bone, one being on each side of the lophosteon or median bone.

This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2020).

单词	pleurosteon
释义	† pleurosteonn. Inflections: Plural pleurostea. Origin: A borrowing from Greek, combined with an English element. Etymons: pleuro- comb. form, Greek ὀστέον. Etymology: < pleuro- comb. form + ancient Greek ὀστέον bone (see osteo- comb. form). Compare pleurosteal adj. N.E.D. (1907) indicates the stress as pleuˈrosteon. Ornithology. Obsolete. Either of the anterior lateral parts of the sternum in birds, with which the ribs articulate; either of the separate centres of ossification from which these parts develop. 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’. 1875 Encycl. Brit. III. 720/1 In Turnix there are two more centres, mesiad of the pleurostea, these are the coracostea. 1892 Philos. Trans. 1891 (Royal Soc.) B. 182 88 The osteites of the costal sternum (pleurostea) have appeared. 1895 New Sydenham Soc. Lexicon Pleurosteon... In young birds this can be seen to be a separate bone, one being on each side of the lophosteon or median bone. This entry has been updated (OED Third Edition, September 2006; most recently modified version published online March 2020). < n.1868
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