单词 | veinlet |
释义 | veinletn. 1. A small vein conveying blood (cf. vein n. 4a); = venule n. 1. Also figurative. Now rare. ΘΚΠ the world > life > the body > vascular system > blood vessel > [noun] > small riveret1615 veinlet1652 veinulet1662 venule1766 1652 T. Urquhart Εκσκυβαλαυρον 143 Her mellifluent and heroinal breast, whose porphyr streaks..expansed in pretty veinelets (through whose sweet conduits run the delicious streams of Nectar, wherewith were cherished the pretty sucklings of the Cyprian goddesse). 1834 T. Carlyle Sartor Resartus ii. iii, in Fraser's Mag. Feb. 185/1 Here, too,..is a Vein or Veinlet of the grand World-circulation of Waters, which, with its atmospheric Arteries, has lasted..with the World. 1855 R. W. Emerson Misc. viii. 63 He no longer fills the veins and veinlets. 1872 T. H. Huxley Lessons Elem. Physiol. (ed. 6) v. 120 The blood of the capillaries of the lobule is poured into that vein by a minute veinlet. 1917 W. G. Christian Textbk. Anat. for Nurses vi. 109 From the left auricle the blood is poured into the left or arterial ventricle and thence is pumped..to the remotest parts of the body, whence it is returned through capillaries, veinlets and veins to the heart. 2001 M. J. Bang Louise in Love 6 The wrist's tiny veinlets sunk While gravity's gooseherd gathered the minion capillaries. 2. Geology and Mining. A small or thin vein of different appearance, composition, etc., in stone or other material; a small or thin vein of a mineral, ore, etc., in a rock formation. Cf. vein n. 2a, 6a. ΘΚΠ the world > the earth > structure of the earth > structural features > vein > [noun] > small veinlet1806 1806 Edinb. Rev. Oct. 81 Their [sc. meteoric stones] transversely striated fracture exhibited indications of metallic veinlets, chiefly of a ferruginous complexion. 1865 J. D. Whitney Rep. Geol. Surv. Calif.: Geol. I. iv. 89 The prevailing rock is serpentine filled with threads and veinlets of quartz, running through it in every direction. 1954 J. F. Kirkaldy Gen. Princ. Geol. x. 124 In a stockwork..the rock is traversed by a multitude of irregular mineralized veinlets without any major veins. 1974 B. Myatt Dict. Austral. Gemstones 134 Mother of opal is the term applied to material, often ironstone, which contains closely spaced veinlets or flecks of precious opal. 2008 Ore Geol. Rev. 34 172/1 Ruby crystals occur..in veinlets or gash veins, as in some occurrences in northern Vietnam. 3. Botany. A small branch or subdivision of a vein in a leaf or other plant part; a venule (cf. venule n. 2). Cf. vein n. 5b. ΘΚΠ the world > plants > part of plant > leaf > [noun] > part or side of > rib or vein nerve?a1425 ribc1450 vein?c1450 sinew1551 brawn1601 master-vein1658 costa1699 venule1766 pen1773 surculus1775 midrib1793 venule1806 veinlet1807 rachis1830 nervure1842 nerving1854 1807 T. Martyn Miller's Gardener's & Botanist's Dict. (rev. ed.) II. ii. at Vatica Leaves..with the veins standing out on both sides and alternate, and the veinlets netted and anastomosing. 1849 J. H. Balfour Man. Bot. §141 There are also other veins of less extent..given off by the midrib, and these give origin to small veinlets. 1877 F. G. Heath Fern World 215 Along on each side of the mid veins of the lobes are alternate veinlets. 1957 Fassett's Man. Aquatic Plants (rev. ed.) 341 Veinlets of leaves conspicuous, forming a network with meshes that are not elongate. 2006 M. F. Barnsley Superfractals iii. 191 (caption) In most cases the branching of the veins is such that no mesophyll cell is far removed from a veinlet. 4. Entomology. A small vein or branch of a vein in an insect's wing; a venule (cf. venule n. 2). Cf. vein n. 9. ΘΚΠ the world > animals > invertebrates > phylum Arthropoda > class Insecta > parts of insects > [noun] > wings(s) > nervure > small nervulet1826 nervule1845 veinlet1851 1851 Trans. Entomol. Soc. 1 263 In the fore wings the oblique veinlets are pale. 1947 A. D. Imms Outl. Entomol. (ed. 3) v. 174 The Palaeodictyoptera were characterized by..the wing-membrane strengthened by an irregular meshwork of veinlets. 2014 Florida Entomologist 97 1606/2 Forewings with complete oblique transverse veinlets in costal cell. This entry has been updated (OED Third Edition, June 2017; most recently modified version published online December 2021). < n.1652 |
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