单词 | disciform |
释义 | disciformadj. 1. Having the form of a disc; disc-shaped, discoidal; (Medicine) characterized by lesions of this form. ΘΚΠ the world > space > shape > curvature > roundness > [adjective] > circular > having shape of disc discous1706 discoid1729 disc-like1787 disc-shaped1801 disciform1807 discoidal1808 discal1839 discose1989 1807 C. D. E. Koenig tr. K. Sprengel Introd. Study Cryptogamous Plants 397 Cornicularia... Disciform, dark-coloured orbillæ, pedicled in the centre. 1833 Trans. Linn. Soc. 11 406 Tab. XXIX. A chalk specimen exhibiting the disciform figure of the animal when completely expanded. 1875 C. C. Blake Zoology 200 The Torpedoes have the body covered with naked unarmed skin, disciform, and rounded. 1917 Ann. Ophthalmol. 26 373 The ophthalmoscope showed in each eye..disciform, yellowish white lesions. 1956 Man 56 28/2 This last character distinguishes these beads from the lentiform or disciform beads of the XVIII and XX Dynasties in Egypt. 1976 Surv. Ophthalmol. 20 277/1 The presence of subretinal hemorrhage..suggests a diagnosis of disciform degeneration. 2006 L. Collier & J. Oxford Human Virol. (ed. 3) xviii. 143/1 The corneal stroma may also be affected (disciform keratitis). 2. Botany. Of a composite flower: composed of fertile disc florets with reduced or filiform marginal florets, superficially similar to a discoid flower (cf. discoid adj. 1). ΘΚΠ the world > plants > particular plants > plants and herbs > according to family > Compositae (composite plants) > [adjective] > of parts of composite plants radiated1665 radiate1668 discoidal1706 discoid1712 disciform1830 obligulate1857 1830 J. Lindley Introd. Nat. Syst. Bot. 134 Stamens..inserted round the base of the stalk of the calyx, which is sometimes disciform. 1900 F. M. Bailey Queensland Flora III. 785 Gnaphaliaceæ.—Heads androgynous, disciform, or homogamous and discoid. 2004 S. Morhardt & E. Morhardt Calif. Desert Flowers 32 Discoid and disciform heads are difficult to tell apart. This entry has been updated (OED Third Edition, December 2013; most recently modified version published online March 2022). < |
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