opisthoticn.adj.

Brit.

/ˌɒpᵻsˈθɒtɪk/,

/ˌɒpᵻsˈθəʊtɪk/, U.S.

/ˌɑpəsˈθɑdɪk/,

/ˌɑpəsˈθoʊdɪk/

Origin: Formed within English, by compounding. Etymons: opistho- comb. form, otic adj.

Etymology: < opistho- comb. form + otic adj.

Zoology and Anatomy.

A. n.

One of the periotic bones, situated at the back of the ear, which in fishes, reptiles, and birds is separate or fused with one of the occipital bones, and in mammals is represented by an embryonic ossification of the temporal bone.

ΘΚΠ

the world > life > the body > structural parts > bone or bones > skull > parts of skull > [noun] > bones of ear > others

os orbiculare1698

orbicular bone1706

tympanic1851

opisthotic1865

prootic1866

tympanal1875

otolith1890

tegmen tympani1890

1865 T. H. Huxley in Palæontologia Indica: Indian Pretertiary Vertebrata 1 i. 11 The under face of the postero-lateral prolongation of the parietal..is flattened and rough, for union with the corresponding process of the exoccipital (or exoccipital and opisthotic).

1873 St. G. Mivart Lessons Elem. Anat. iii. 106 The Opisthotic constantly anchyloses with the lateral part of the occipital before it unites with the pro-otic in all Vertebrates below Mammals.

1924 Proc. Royal Soc. 96 199 There is no opisthotic. The anterior part of the skull is greatly modified.

1940 Philos. Trans. (Royal Soc.) B. 230 352 The fenestra ovalis in that form were to be carried far laterally, carrying the pro-otic, opisthotic and parasphenoid in unchanged mutual relations.

1994 Nature 5 May 56/1 Distal end of opisthotic is covered by quadrate.

B. adj.

Designating or relating to the opisthotic.

ΘΚΠ

the world > life > the body > structural parts > bone or bones > skull > parts of skull > [adjective] > bones of ear

petrousc1475

petrosal1713

otocranial1848

opisthotic1866

periotic1866

prootic1866

tympano-periotic1870

stapedial1875

incudal1890

tympanomalleal1891

tympanomandibular1891

tympanosquamosal1891

tympanostapedial1900

tympanotemporal1900

malleolar1902

1866 Philos. Trans. (Royal Soc.) 156 124 The prootic and opisthotic..bones have just appeared.

1896 Philos. Trans. 1895 (Royal Soc.) B. 186 75 The upper angle of the triangular perforation in the occipital plate.., which is above the opisthotic bone and below the squamosal.

1944 Amer. Midland Naturalist 31 421 Von Bedriaga..describes proötic, epiotic and opisthotic bones as well as distinct exoccipitals.

1969 Science 14 Nov. 889/1 Prootic and opisthotic bones are well ossified, although rarely fused.

1998 Zool. Jrnl. Linn. Soc. 122 61 It is shown to resemble the osteolepiform Eusthenopteron in such features as the occipital arch and opisthotic region.

This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022).

单词	opisthotic
释义	opisthoticn.adj. Brit. /ˌɒpᵻsˈθɒtɪk/, /ˌɒpᵻsˈθəʊtɪk/, U.S. /ˌɑpəsˈθɑdɪk/, /ˌɑpəsˈθoʊdɪk/ Origin: Formed within English, by compounding. Etymons: opistho- comb. form, otic adj. Etymology: < opistho- comb. form + otic adj. Zoology and Anatomy. A. n. One of the periotic bones, situated at the back of the ear, which in fishes, reptiles, and birds is separate or fused with one of the occipital bones, and in mammals is represented by an embryonic ossification of the temporal bone. ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > parts of skull > [noun] > bones of ear > others os orbiculare1698 orbicular bone1706 tympanic1851 opisthotic1865 prootic1866 tympanal1875 otolith1890 tegmen tympani1890 1865 T. H. Huxley in Palæontologia Indica: Indian Pretertiary Vertebrata 1 i. 11 The under face of the postero-lateral prolongation of the parietal..is flattened and rough, for union with the corresponding process of the exoccipital (or exoccipital and opisthotic). 1873 St. G. Mivart Lessons Elem. Anat. iii. 106 The Opisthotic constantly anchyloses with the lateral part of the occipital before it unites with the pro-otic in all Vertebrates below Mammals. 1924 Proc. Royal Soc. 96 199 There is no opisthotic. The anterior part of the skull is greatly modified. 1940 Philos. Trans. (Royal Soc.) B. 230 352 The fenestra ovalis in that form were to be carried far laterally, carrying the pro-otic, opisthotic and parasphenoid in unchanged mutual relations. 1994 Nature 5 May 56/1 Distal end of opisthotic is covered by quadrate. B. adj. Designating or relating to the opisthotic. ΘΚΠ the world > life > the body > structural parts > bone or bones > skull > parts of skull > [adjective] > bones of ear petrousc1475 petrosal1713 otocranial1848 opisthotic1866 periotic1866 prootic1866 tympano-periotic1870 stapedial1875 incudal1890 tympanomalleal1891 tympanomandibular1891 tympanosquamosal1891 tympanostapedial1900 tympanotemporal1900 malleolar1902 1866 Philos. Trans. (Royal Soc.) 156 124 The prootic and opisthotic..bones have just appeared. 1896 Philos. Trans. 1895 (Royal Soc.) B. 186 75 The upper angle of the triangular perforation in the occipital plate.., which is above the opisthotic bone and below the squamosal. 1944 Amer. Midland Naturalist 31 421 Von Bedriaga..describes proötic, epiotic and opisthotic bones as well as distinct exoccipitals. 1969 Science 14 Nov. 889/1 Prootic and opisthotic bones are well ossified, although rarely fused. 1998 Zool. Jrnl. Linn. Soc. 122 61 It is shown to resemble the osteolepiform Eusthenopteron in such features as the occipital arch and opisthotic region. This entry has been updated (OED Third Edition, June 2004; most recently modified version published online March 2022). < n.adj.1865
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