aegithognathousadj.

Brit.

/iːdʒɪˈθɒɡnəθəs/, U.S.

/ˌidʒᵻˈθɑɡnəθəs/

Origin: Either (i) a borrowing from Latin, combined with an English element. Or (ii) a borrowing from Greek, combined with an English element. Etymons: Latin aegithus , -gnathous comb. form; Greek αἴγιθος , -gnathous comb. form.

Etymology: < classical Latin aegithus, small bird, perhaps the blue tit, or its etymon ancient Greek αἴγιθος, a kind of small bird, of unknown origin + -gnathous comb. form (compare -o- connective).

Chiefly Ornithology.

Designating a conformation of the bones of the palate typical of passerine birds, with the maxillopalatines separate and the vomer broad and truncated at the front (see quot. 1894); exhibiting such a palatal structure, which is found also in woodpeckers and swifts (formerly grouped with passerines in a division called Aegithognathae).

ΘΚΠ

the world > animals > birds > bones > [adjective] > of palatine > of group defined by

aegithognathous1867

1867 T. H. Huxley in Proc. Zool. Soc. 425 In this order [sc. Carinatæ] the bones which enter into the formation of the palate are disposed in four different modes, which may be called respectively the Dromæognathous, Schizognathous, Desmognathous, and Ægithognathous arrangement.

1894 R. B. Sharpe Hand-bk. Birds Great Brit. I. 1 The palate is said to be ‘ægithognathous’, or ‘Passerine’, when the vomer is broadened and blunt, or truncated, at the anterior end, and is not connected with the maxillo-palatines, which, consequently, are widely separated from each other.

1914 H. C. Oberholser Monogr. of Genus Chordeiles Swainson 8 The Caprimulgida are considered schizognathous, although by Huxley originally placed in the aegithognathous series.

1957 D. Dewar Transformist Illusion App. iii. 279 The Turnices (bustard-quails)—a group placed by him [sc. Pycraft] far from the Passeres—have an aegithognathous skull.

1998 H. A. Meynell Redirecting Philos. iv. xiv. 270 We can have ever so ‘clear and distinct an idea’ of something, say, of a plesiosaurus living in the twentieth century or an aegithognathous bird with webbed feet.

Derivatives

aegiˈthognathism n. rare the condition of being aegithognathous.

ΚΠ

1877 W. K. Parker & G. T. Bettany Morphol. of Skull vii. 265 There is incomplete aegithognathism in the Turnix group.

1982 Auk 99 435 Often the palate is poorly known, but it appears clear that aegithognathism is not present in the Theocodontia, Crocodilia, Saurischia, Ornithischia, or Pterosauria.

This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).

单词	aegithognathous
释义	aegithognathousadj. Brit. /iːdʒɪˈθɒɡnəθəs/, U.S. /ˌidʒᵻˈθɑɡnəθəs/ Origin: Either (i) a borrowing from Latin, combined with an English element. Or (ii) a borrowing from Greek, combined with an English element. Etymons: Latin aegithus , -gnathous comb. form; Greek αἴγιθος , -gnathous comb. form. Etymology: < classical Latin aegithus, small bird, perhaps the blue tit, or its etymon ancient Greek αἴγιθος, a kind of small bird, of unknown origin + -gnathous comb. form (compare -o- connective). Chiefly Ornithology. Designating a conformation of the bones of the palate typical of passerine birds, with the maxillopalatines separate and the vomer broad and truncated at the front (see quot. 1894); exhibiting such a palatal structure, which is found also in woodpeckers and swifts (formerly grouped with passerines in a division called Aegithognathae). ΘΚΠ the world > animals > birds > bones > [adjective] > of palatine > of group defined by aegithognathous1867 1867 T. H. Huxley in Proc. Zool. Soc. 425 In this order [sc. Carinatæ] the bones which enter into the formation of the palate are disposed in four different modes, which may be called respectively the Dromæognathous, Schizognathous, Desmognathous, and Ægithognathous arrangement. 1894 R. B. Sharpe Hand-bk. Birds Great Brit. I. 1 The palate is said to be ‘ægithognathous’, or ‘Passerine’, when the vomer is broadened and blunt, or truncated, at the anterior end, and is not connected with the maxillo-palatines, which, consequently, are widely separated from each other. 1914 H. C. Oberholser Monogr. of Genus Chordeiles Swainson 8 The Caprimulgida are considered schizognathous, although by Huxley originally placed in the aegithognathous series. 1957 D. Dewar Transformist Illusion App. iii. 279 The Turnices (bustard-quails)—a group placed by him [sc. Pycraft] far from the Passeres—have an aegithognathous skull. 1998 H. A. Meynell Redirecting Philos. iv. xiv. 270 We can have ever so ‘clear and distinct an idea’ of something, say, of a plesiosaurus living in the twentieth century or an aegithognathous bird with webbed feet. Derivatives aegiˈthognathism n. rare the condition of being aegithognathous. ΚΠ 1877 W. K. Parker & G. T. Bettany Morphol. of Skull vii. 265 There is incomplete aegithognathism in the Turnix group. 1982 Auk 99 435 Often the palate is poorly known, but it appears clear that aegithognathism is not present in the Theocodontia, Crocodilia, Saurischia, Ornithischia, or Pterosauria. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021). < adj.1867
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