单词 | dendrite |
释义 | dendriten. 1. A natural marking or figure of a branching form, like a tree or moss, found on or in some stones or minerals; a stone or mineral so marked. ΘΚΠ the world > the earth > minerals > mineral structure or appearance > [noun] > marking dendrite1728 macula1802 macle1839 trichite1868 axiolite1879 1728 E. Chambers Cycl. (at cited word) In some Dendrites, the Figures penetrate quite through. 1774 Strange in Philos. Trans. (Royal Soc.) 65 35 It is also variegated by frequent dendrites. 1825 S. T. Coleridge Aids Refl. 55 As Dendrites derive the outlines..from the casual neighbourhood and pressure of the Plants. 1863 C. Lyell Geol. Evid. Antiq. Man vii. 116 Those ramifying crystallisations called dendrites usually consisting of the mixed oxyds of iron and manganese, forming extremely delicate blackish brown sprigs, resembling the smaller kinds of sea weed. 2. A crystalline growth of branching or arborescent form, as of some metals under electrolysis. ΚΠ 1882 A. S. Herschel in Nature No. 642. 363 After a few hours of charging, the rough dendrites of humus-coloured substance acquired frond-like form. 3. Anatomy. Any of one or more processes from a nerve cell which are typically short and extensively branched and which conduct impulses towards the cell body. ΚΠ 1893 E. A. Schäfer in Brain 16 136 I propose therefore to term the axis-cylinder or nerve-fibre processes neurons; and the protoplasmic processes dendrons. [Note] The latter have been known as ‘dendrites’, but the termination ‘on’ is..preferable to ‘ite’. 1899 E. A. Schäfer in Brain 22 209 The protoplasmic processes are also referred to as the dendrites (His), dendrons (Schäfer) and dendritic processes. 1900 W. S. Hall Text-bk. Physiol. 535 The dendrites, or protoplasmic processes, resemble more closely in appearance the cell-body itself than does the axon. 1902 Encycl. Brit. XXV. 394/2 In the simplest cases the dendrites carry the sensory impulse to the nerve-cell. 1927 J. B. S. Haldane & J. S. Huxley Animal Biol. i. 40 Shorter branched outgrowths (dendrites). 1962 Lancet 29 Dec. 1359/2 The cell bodies and dendrites of both cerebral and cerebellar cortex are indeed conspicuously rich in protein. 1967 C. R. Noback Human Nerv. Syst. ii. 32/1 Neurons have two types of processes, viz., axons and dendrites (dendrons). Derivatives denˈdritiform adj. having the form or appearance of a dendrite. ΚΠ 1890 in Cent. Dict. This entry has not yet been fully updated (first published 1895; most recently modified version published online March 2022). < n.1728 |
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