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单词 discal
释义

discaladj.

Brit. /ˈdɪskl/, U.S. /ˈdɪskəl/
Forms: 1700s– discal, 1800s– diskal.
Origin: A borrowing from Latin, combined with an English element. Etymons: Latin discus , -al suffix1.
Etymology: < classical Latin discus disc n. + -al suffix1.
1. Entomology. Relating to or situated on the central area of an insect's elytrum, thorax, or wing. Cf. disc n. 8c.
ΚΠ
1787 M. Martin Observ. Marine Vermes II. ii. 21/2 Tortoise-beetle... Red, spotted with black; each Wing-sheath marked with a long discal spot.
1858 F. Smith Catal. Hymenopterous Insects Brit. Mus. vi. 34 The diskal line of the thorax curved from the base to the apex.
1891 B. T. Lowne Anat., Physiol., Morphol., & Devel. Blow-fly II. v. 198 The median area [of the wing] is also called the disc or discal area.
1983 J. Heath & A. M. Emmet Moths & Butterflies Great Brit. IX. 121/2 Forewing with a characteristic pattern composed of five transverse lines..and three discal spots.
2. Of or relating to a disc or discs (in various senses).
ΚΠ
1818 T. Nuttall Genera N. Amer. Plants I. 173 Diskal florets very short, viscidly glandular.
1832 Philos. Trans. (Royal Soc.) 122 186 For the discal part, the direction of the induced electric current is the same in all, namely, from the circumference towards the centre.
1863 Proc. Acad. Nat. Sci. Philadelphia 1862 239 Discal laminæ [on a fish].
1931 Lancet 26 Sept. 698/1 Discal and nuclear hernias.
2009 Dumbarton Oaks Papers 63 233/2 Discal prolapse in our sample is most probably caused by degenerative changes associated with repetitive stress on the vertebral column.
3. Disc-like; disc-shaped.
ΘΚΠ
the world > space > shape > curvature > roundness > [adjective] > circular > having shape of disc
discous1706
discoid1729
disc-like1787
disc-shaped1801
disciform1807
discoidal1808
discal1839
discose1989
1839 Standard 13 Nov. Some few [shooting stars], apparently of a discal form, were not unlike the planet Jupiter, as seem with a magnifying power of 50 or 60.
1848 R. Hill in P. H. Gosse Naturalist's Sojourn in Jamaica (1851) 345 The exceedingly discal character of the extremity [of the snout of a manatee].
1907 Antiquary June 229/2 A charm of solar potency not only because of its discal form, but because of its fire-producing properties.
1992 E. Errington et al. Crossroads of Asia 164/1 The women..wear a conical pendant in one ear and a discal earring in the other.

Compounds

discal cell n. Entomology a cell (cell n.1 14b) in the discal area of an insect's wing; esp. a large cell in the basal half of the wing of a butterfly or moth.
ΚΠ
1852 F. Walker Catal. Specimens Neuropterous Insects in Coll. Brit. Mus. I. 16 Two pale brown spots which are occasionally obsolete, one at the base of the apical areolets, the other occupying the base of the discal cell.
1947 A. D. Imms Outl. Entomol. (ed. 3) iv. 135 Specialization involves..the formation of a large discal cell in each wing by the absorption of intervening veins and cells.
2003 D. V. Alford Biocontrol Oilseed Rape Pests xiii. 223 Basal cells very short or absent; 2nd basal cell confluent with discal cell.
This entry has been updated (OED Third Edition, December 2013; most recently modified version published online March 2022).
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adj.1787
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