parasphenoidn.adj.

Brit.

/ˌparəˈsfiːnɔɪd/, U.S.

/ˌpɛrəˈsfiˌnɔɪd/

Origin: Formed within English, by derivation. Etymons: para- prefix¹ 1, sphenoid n.

Etymology: < para- prefix¹ 1 + sphenoid n.

Zoology and Anatomy.

A. n.

An unpaired, median, often dagger-shaped dermal bone on the undersurface of the cranium in many vertebrates.

ΘΚΠ

the world > animals > animal body > general parts > constituent materials > [noun] > bone at base of skull

parasphenoid1868

1868 Proc. Acad. Nat. Sci. Philadelphia 247 They..exhibit a broad continuous palatopterygoid arch, in close contact with the parasphenoid.

1884 Athenæum 13 Dec. 775/1 Mr. Sutton came to the conclusion that the parasphenoid of fishes was the homologue of the vomer of mammals.

1939 T. L. Green Pract. Animal Biol. i. 134 Para-sphenoid (a dagger-shaped bone) forming the floor of the skull.

1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) xviii. 263 On the ventral side is found the large T-shaped parasphenoid.

1994 Nature 7 Apr. 508/2 Long cultriform process of the parasphenoid contacting vomers.

B. adj.

Designating this bone; of or relating to this bone; (also) located near the sphenoid bone, sinus, etc.

ΚΠ

1873 St. G. Mivart Lessons Elem. Anat. iii. 137 The para-sphenoid bone encloses it below.

1884 E. Coues Key to N. Amer. Birds (ed. 2) 155 The basitemporal and parasphenoid bones which underfloor the whole skull.

1929 J. S. Huxley Ess. Pop. Sci. xvii. 193 The frontal or parasphenoid bones of the frog's skull.

1979 Arch. Otolaryngol. 105 103/3 For the removal of tumors in the clivus and parasellar or parasphenoid regions, the skin incision is carried out anteriorly over the temporal region.

1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xi. 311 Teeth are present on the palatal elements of the oral roof in many members of these groups, on the parasphenoid bone underlying the braincase, and on the inner surface of the lower jaw.

1991 Otolaryngol. Head & Neck Surg. 105 608 An interesting case of an accessory parasphenoid sinus mucocele in a 10-year-old girl is reported.

Derivatives

paraspheˈnoidal adj. of or relating to the parasphenoid; (also) located near the sphenoid bone, sinus, etc.

ΚΠ

1870 Philos. Trans. 1869 (Royal Soc.) 159 763 Between the palatal skin below, and the..skull-base above, a considerable mass of stroma is formed,..which soon becomes the seat of the rostral (or anterior parasphenoidal) ossification.

1985 Radiology 155 137/2 Autopsy series have previously demonstrated exposure of the parasphenoidal carotid arteries with varying degrees of bony protection.

1988 Palaeontology 31 85 Certain characters (parasphenoidal tubera for the insertion of subvertebral (hypaxial) muscles..) resemble those in Seymouria.

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

单词	parasphenoid
释义	parasphenoidn.adj. Brit. /ˌparəˈsfiːnɔɪd/, U.S. /ˌpɛrəˈsfiˌnɔɪd/ Origin: Formed within English, by derivation. Etymons: para- prefix¹ 1, sphenoid n. Etymology: < para- prefix¹ 1 + sphenoid n. Zoology and Anatomy. A. n. An unpaired, median, often dagger-shaped dermal bone on the undersurface of the cranium in many vertebrates. ΘΚΠ the world > animals > animal body > general parts > constituent materials > [noun] > bone at base of skull parasphenoid1868 1868 Proc. Acad. Nat. Sci. Philadelphia 247 They..exhibit a broad continuous palatopterygoid arch, in close contact with the parasphenoid. 1884 Athenæum 13 Dec. 775/1 Mr. Sutton came to the conclusion that the parasphenoid of fishes was the homologue of the vomer of mammals. 1939 T. L. Green Pract. Animal Biol. i. 134 Para-sphenoid (a dagger-shaped bone) forming the floor of the skull. 1960 D. C. Braungart & R. Buddeke Introd. Animal Biol. (ed. 5) xviii. 263 On the ventral side is found the large T-shaped parasphenoid. 1994 Nature 7 Apr. 508/2 Long cultriform process of the parasphenoid contacting vomers. B. adj. Designating this bone; of or relating to this bone; (also) located near the sphenoid bone, sinus, etc. ΚΠ 1873 St. G. Mivart Lessons Elem. Anat. iii. 137 The para-sphenoid bone encloses it below. 1884 E. Coues Key to N. Amer. Birds (ed. 2) 155 The basitemporal and parasphenoid bones which underfloor the whole skull. 1929 J. S. Huxley Ess. Pop. Sci. xvii. 193 The frontal or parasphenoid bones of the frog's skull. 1979 Arch. Otolaryngol. 105 103/3 For the removal of tumors in the clivus and parasellar or parasphenoid regions, the skin incision is carried out anteriorly over the temporal region. 1986 A. S. Romer & T. S. Parsons Vertebr. Body (ed. 6) xi. 311 Teeth are present on the palatal elements of the oral roof in many members of these groups, on the parasphenoid bone underlying the braincase, and on the inner surface of the lower jaw. 1991 Otolaryngol. Head & Neck Surg. 105 608 An interesting case of an accessory parasphenoid sinus mucocele in a 10-year-old girl is reported. Derivatives paraspheˈnoidal adj. of or relating to the parasphenoid; (also) located near the sphenoid bone, sinus, etc. ΚΠ 1870 Philos. Trans. 1869 (Royal Soc.) 159 763 Between the palatal skin below, and the..skull-base above, a considerable mass of stroma is formed,..which soon becomes the seat of the rostral (or anterior parasphenoidal) ossification. 1985 Radiology 155 137/2 Autopsy series have previously demonstrated exposure of the parasphenoidal carotid arteries with varying degrees of bony protection. 1988 Palaeontology 31 85 Certain characters (parasphenoidal tubera for the insertion of subvertebral (hypaxial) muscles..) resemble those in Seymouria. This entry has been updated (OED Third Edition, June 2005; most recently modified version published online March 2022). < n.adj.1868
随便看	beyond one's depth beyond one's grasp beyond one's remit beyond or out of one's depth beyond past compare beyond peradventure beyond price beyond question beyond reach beyond reach of beyond reasonable doubt beyond recall beyond reclaim beyond recovery beyond redemption beyond repair beyond reproach beyond retrieval beyond retrieve beyond revoke beyond sea beyond seas beyond sundown beyond the beltway beyond the call of duty