suboperculumn.

Brit.

/ˌsʌbə(ʊ)ˈpəːkjᵿləm/,

/ˌsʌbɒˈpəːkjᵿləm/, U.S.

/ˌsəboʊˈpərkjələm/

Inflections: Plural subopercula.

Origin: Formed within English, by derivation. Etymons: sub- prefix, operculum n.

Etymology: < sub- prefix + operculum n. With sense 1 compare French subopercule (1815 or earlier in Cuvier). Compare slightly later subopercle n.

1. Zoology. A bone in the lower part of the operculum of a fish; = subopercular n. Cf. operculum n. 1b.

ΘΚΠ

the world > animals > fish > parts of fish > [noun] > bones (various types of)

grate1481

pharyngeal1791

suboperculum1818

supratemporal1834

shackle-joint1837

mastoid1840

wrist1840

mastoid bone1841

subopercular1841

mesotympanic1846

suprascapula1846

hypobranchials1848

hypotympanic1848

urohyal1848

radius1854

epicentral1866

pterotic1866

mesocoracoid1868

supraclavicle1868

precoracoid1869

symplectic1870

hypural1871

mesopterygoid1871

post-temporal1871

postclavicle1872

brachial1873

urostyle1875

hypercoracoid1876

admaxillary1885

intercalarium1887

palatopterygoquadrate1888

subtectal1888

Weberian apparatus1889

Weberian ossicles1889

radial1890

supracleithrum1903

1818 Jrnl. Acad. Nat. Sci. Philadelphia 1 228 At the other extremity is an opercular plate, radiating backwards, and below this, the analogue of the sub-operculum.

1882 Proc. & Trans. Nova Scotian Inst. Nat. Sci. 5 345 The subopercula: these are of very peculiar form, and are attached to the anterior faces of the ridges on the opercula bones.

1931 E. G. Boulenger Fishes xvi. 134 The sub-operculum can be raised or turned outwards almost at right-angles with the body, enabling the fish to obtain a purchase upon rough surfaces when on land.

1975 Copeia No. 1. 63/2 The suboperculum is small and pointed.

2005 Jrnl. Vertebr. Paleontol. 25 33/2 As in all pycnodonts, suboperculum and interoperculum are absent.

†2. Anatomy. A gyrus inferior to the operculum of the cerebral cortex, overlying the insula. Cf. operculum n. 4. Obsolete. rare.

ΘΚΠ

the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > cerebrum > hemisphere > convolutions and parts

circumvolution1578

convolution1615

crotchet1678

gyrus1842

subgyre1889

suboperculum1889

1889 B. G. Wilder in A. H. Buck Ref. Handbk. Med. Sci. VIII. 160/2 The insula..becomes a subgyre, while the operculum, preoperculum, suboperculum, and postoperculum are supergyres.

This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022).

单词	suboperculum
释义	suboperculumn. Brit. /ˌsʌbə(ʊ)ˈpəːkjᵿləm/, /ˌsʌbɒˈpəːkjᵿləm/, U.S. /ˌsəboʊˈpərkjələm/ Inflections: Plural subopercula. Origin: Formed within English, by derivation. Etymons: sub- prefix, operculum n. Etymology: < sub- prefix + operculum n. With sense 1 compare French subopercule (1815 or earlier in Cuvier). Compare slightly later subopercle n. 1. Zoology. A bone in the lower part of the operculum of a fish; = subopercular n. Cf. operculum n. 1b. ΘΚΠ the world > animals > fish > parts of fish > [noun] > bones (various types of) grate1481 pharyngeal1791 suboperculum1818 supratemporal1834 shackle-joint1837 mastoid1840 wrist1840 mastoid bone1841 subopercular1841 mesotympanic1846 suprascapula1846 hypobranchials1848 hypotympanic1848 urohyal1848 radius1854 epicentral1866 pterotic1866 mesocoracoid1868 supraclavicle1868 precoracoid1869 symplectic1870 hypural1871 mesopterygoid1871 post-temporal1871 postclavicle1872 brachial1873 urostyle1875 hypercoracoid1876 admaxillary1885 intercalarium1887 palatopterygoquadrate1888 subtectal1888 Weberian apparatus1889 Weberian ossicles1889 radial1890 supracleithrum1903 1818 Jrnl. Acad. Nat. Sci. Philadelphia 1 228 At the other extremity is an opercular plate, radiating backwards, and below this, the analogue of the sub-operculum. 1882 Proc. & Trans. Nova Scotian Inst. Nat. Sci. 5 345 The subopercula: these are of very peculiar form, and are attached to the anterior faces of the ridges on the opercula bones. 1931 E. G. Boulenger Fishes xvi. 134 The sub-operculum can be raised or turned outwards almost at right-angles with the body, enabling the fish to obtain a purchase upon rough surfaces when on land. 1975 Copeia No. 1. 63/2 The suboperculum is small and pointed. 2005 Jrnl. Vertebr. Paleontol. 25 33/2 As in all pycnodonts, suboperculum and interoperculum are absent. †2. Anatomy. A gyrus inferior to the operculum of the cerebral cortex, overlying the insula. Cf. operculum n. 4. Obsolete. rare. ΘΚΠ the world > life > the body > nervous system > cerebrospinal axis > brain > parts of brain > [noun] > cerebrum > hemisphere > convolutions and parts circumvolution1578 convolution1615 crotchet1678 gyrus1842 subgyre1889 suboperculum1889 1889 B. G. Wilder in A. H. Buck Ref. Handbk. Med. Sci. VIII. 160/2 The insula..becomes a subgyre, while the operculum, preoperculum, suboperculum, and postoperculum are supergyres. This entry has been updated (OED Third Edition, June 2012; most recently modified version published online March 2022). < n.1818
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